CN104168407A - How to shoot panoramic images - Google Patents

Abstract

The present invention is a method for photographing a panoramic image, which is applied to an electronic device. The method comprises the following steps: defining a plurality of pre-selected focus positions required for the panoramic image; displaying a scatter diagram including a plurality of pointers representing the plurality of pre-selected focus positions; photographing a plurality of target images corresponding to the plurality of pre-selected focus positions; changing the display appearance of the plurality of pointers according to the photographing status of the plurality of target images; and generating the panoramic image according to the plurality of target images.

Description

How to shoot panoramic images

technical field

The present invention relates to a shooting method, and in particular to a panoramic image shooting method.

Background technique

In order to satisfy consumers' needs for taking photos, electronic devices such as mobile phones, digital cameras, tablet computers, etc. often have built-in lenses and screens to provide shooting functions. Among them, some electronic devices with a shooting function (hereinafter referred to as shooting devices) further provide a panoramic image (Panorama) shooting function.

Panoramic imagery is a shooting method whose purpose is to create an image with a large field of view. The panorama image is generated by temporarily storing and stitching multiple raw images obtained by shooting, and jointly making a panorama image with a larger size.

Please refer to FIG. 1 , which shows a top view of the original image captured by the shooting device on the same horizontal plane. After the photographing device 10 captures the scene of the external environment through the lens 11, it displays a corresponding preview image (preview image) through a screen (not shown).

In FIG. 1 , it is assumed that the user rotates the photographing device 10 in a clockwise direction, and sequentially selects the first viewfinder position P1, the second viewfinder position P2, the third viewfinder position P3, the fourth viewfinder position P4, and the fifth viewfinder position P5. Press the shutter. The five original images were taken next to each other and partially overlap each other. After stitching, these five original images can be used to generate a panoramic image.

The quality of the panoramic image depends on factors such as the degree of correlation between the original images and the number of original images. The more original images are used, the effect of the panoramic image generated by stitching can be improved. However, the larger the number of original images, the more times the user has to take pictures, which increases the complexity of stitching the panoramic images.

Contents of the invention

An embodiment of the present invention is a method for shooting a panoramic image, comprising the following steps: defining a plurality of preselected focus positions required for a panoramic image; displaying a scatter diagram including a plurality of pointers representing the preselected focus positions; photographing A plurality of target images corresponding to the pre-selected focus positions; changing the display appearance of the pointers according to the shooting status of the target images; and generating the panoramic image according to the target images.

Another embodiment of the present invention is a method for shooting a panoramic image, which is applied to an electronic device. The shooting method includes the following steps: displaying a preview image in a first display mode; Pre-selected focus positions, wherein the pre-selected focus positions are located in a three-dimensional space; displaying one of the pre-selected focus positions in the preview screen in response to the rotation of the electronic device; and when aligned with the one of the pre-selected focus positions, so that An area displaying a corresponding target image in the preview image is changed from the first display mode to a second display mode.

In order to have a better understanding of the above and other aspects of the present invention, preferred embodiments will be described in detail below together with the accompanying drawings.

Description of drawings

Fig. 1 is a top view of the photographing device taking pictures on the same horizontal plane.

FIG. 2 is a schematic diagram of a shooting device taking a view in a stereoscopic space.

FIG. 3 is a flowchart of generating a panoramic image according to an embodiment.

FIG. 4A is a schematic diagram of capturing an initial image by a photographing device.

FIG. 4B is a schematic diagram of a user interface displayed on the screen after the camera captures an initial image.

FIG. 5A is a schematic diagram of a pre-selected focus position of the camera lens facing the central parallel.

FIG. 5B is a schematic diagram of a pre-selected focus position where the lens of the photographing device faces the upper latitude.

FIG. 5C is a schematic diagram of a pre-selected focus position where the lens of the photographing device faces the lower latitude.

FIG. 6 is a schematic diagram further illustrating the corresponding relationship between the scatter diagram and the preselected focus position.

FIG. 7A is a hypothetical shooting device that generates a panoramic image in a cylindrical range.

Figure 7B is a scatter diagram representative of the preselected focus positions shown in Figure 7A.

FIG. 8A is a schematic diagram of a first display mode representing a range of uncaptured images in the preview screen of the photographing device.

FIG. 8B is a schematic diagram of the camera displaying a preview image in the first display mode and the second display mode.

FIG. 8C is a schematic diagram of a preview screen of the photographing device during the process of finding another pre-selected focus position.

Fig. 9 is a block diagram of the photographing device.

FIG. 10 is a flow chart of displaying a virtual image according to a panoramic image.

FIG. 11 is a schematic diagram of displaying a virtual image on a screen.

FIG. 12 is a schematic diagram showing a viewing angle using a radar chart.

FIG. 13 is a schematic diagram showing another perspective using a radar chart.

FIG. 14 is a schematic diagram of selecting the entire virtual image as the selected image.

FIG. 15 is a schematic diagram of selecting a part of the virtual image as the selected image.

[Description of labels]

Shooting device 10, 20, 50 Lens 11, 305

Screen 301 Focus selection pattern 31

Left part 31a Right part 31b

Shooting Confirmation Pattern 37 Prompt Symbol 371

Scatter Chart 35 Target Pattern 33

Control unit 303 Attitude sensing unit 307

Reset Hint Pattern 45 Viewpoint Pattern 46

Gray Scale Sector 27 Marquee 491, 492

virtual image 60

Detailed ways

For the convenience of explanation, the original images used for stitching the panoramic images are further divided into an initial image (initial photograph) and a target image (target photograph). Wherein, the initial image represents the original image obtained from the first shot, and the target image represents the rest of the original images required to generate the panoramic image.

Here, when the shooting device shoots a panoramic image, the shooting position corresponding to the target image to be shot, estimated according to the panoramic image algorithm, is called the pre-selected focus position. In short, the initial position corresponding to the initial image is determined by the user, and the preselected focus position corresponding to the target image is estimated by a panoramic image algorithm.

An embodiment of the present invention provides a shooting method to guide users to quickly shoot target images. The following embodiments illustrate how to speed up the shooting and display of the panoramic image by using various prompt patterns. These prompt patterns are displayed through a Graphical User Interface (GUI for short), and are used to assist the user to operate the photographing device.

For example, one type of prompt pattern is target patterns. The position of the target pattern on the screen is used to represent predefined target positions. Accordingly, when the photographing device is aimed at the pre-selected focus position represented by the prompt pattern, the photographing device can quickly capture the target image. In addition to the target pattern, the photographing device also provides other types of prompt patterns. The appearance and position of the reminder pattern described in the following embodiments are examples, and the actual application is not limited thereto.

Please refer to FIG. 2 , which is a schematic diagram of a photographing target for shooting a panoramic image in a three-dimensional space. In this diagram, x-axis, y-axis and z-axis represent three directions of the three-dimensional space, and the position of the camera 20 is taken as the center point (x, y, z)=(0,0,0) of the three-dimensional space. Generally speaking, the photographing device 20 does not move during the process of photographing the panoramic image. However, the imaging device 20 rotates around one of the x-axis, y-axis, and z-axis at the center point.

In this figure, the horizontal plane where the photographing device 20 is located is defined as an x-y plane; and it is assumed that when the photographing device 20 is in an initial position, the body is perpendicular to the horizontal plane. In addition, in FIG. 2, a plurality of dotted lines represent latitude lines parallel to the x-y plane; and, a plurality of solid lines represent meridian lines perpendicular to the x-y plane.

First, it is assumed that the photographing device 20 is kept vertical to the horizontal plane. Afterwards, when the photographing device 20 rotates around the z-axis, it synchronously photographs the viewfinder position located on the central latitude line Lc, and obtains a corresponding target image.

When the posture of the photographing device 20 is changed, the included angle (tilt angle) between the photographing device 20 and the x-y plane also changes accordingly. Jointly, the target image captured by the photographing device 20 will correspond to the viewfinder positions of the upper latitude Lu and the lower latitude Ld.

In short, in order to capture the target image, the photographing device 20 needs to select multiple viewing positions on multiple parallel lines from the surface of the sphere. Wherein, compared with other latitudes, the length of the central latitude Lc is longer, so the number of viewfinder positions on the central latitude Lc is also larger than the number of viewfinder positions on the upper latitude Lu and the lower latitude Ld.

After splicing the initial image and all target images according to the panoramic image algorithm, a spherical panoramic image will be generated. When the user watches the spherical panoramic image, it is like being in the center of the sphere in FIG. 2 , watching the panoramic image attached to the surface of the sphere.

Please refer to FIG. 3 , which is a flowchart of generating a panoramic image according to an embodiment. When the photographing device 20 uses the lens to find a view, the screen will display a preview image (preview image) corresponding to the external landscape (step S311). When the user moves or rotates the photographing device 20 , the content displayed on the preview screen changes accordingly. If the user confirms that he wants to shoot, he uses the camera 20 to shoot an initial image (step S313 ).

After capturing the initial image, the photographing device 20 estimates the viewfinder position corresponding to the target image according to the panoramic image algorithm (step S315 ). Here, the estimated framing position is referred to as a pre-selected focus position (predefined target position, denoted by CP). In step S315, the panorama image algorithm will calculate and estimate the number and positions of the required pre-selected focus positions according to the complexity, capturing angle, viewing angle and other parameters of the initial image. Thereafter, the photographing device 20 will correspond to the photographing target image (step S317).

Next, it is determined whether the shooting process of the panoramic image is completed (step S318 ). If not, the photographing device 20 will continue to photograph the remaining target images. If so, the photographing device stitches the initial image and the target image to generate a panoramic image (step S319 ).

In practical applications, the determination of whether step S318 is established or not does not need to be limited to the fact that all target images have been captured. For example, if the user wants to interrupt the shooting process of the panoramic image after shooting part of the target image, it can also be considered that step S318 is established.

Please refer to FIG. 4A , which is a schematic diagram of capturing an initial image by the photographing device. Besides the initial image, the screen 301 also displays a set of focus selection patterns 31 and a shooting confirmation pattern 37 . The focus selection pattern 31 represents the focal position of the lens, and is usually located at the center of the preview image. In FIG. 4A, the focus selection pattern 31 includes a left part 31a and a right part 31b. Furthermore, the shooting confirmation pattern 37 represents whether the shooting conditions are met.

When the shooting conditions are met, the shooting device 20 will continue to shoot the target image. It should be noted that the shooting process of the target image may be manually shot by the user, or automatically shot by the shooting device. In this embodiment, the shooting confirmation pattern 37 is displayed through a prompt symbol (prompt symbol) 371, representing whether to continue shooting.

Before the initial image is captured, the prompt symbol 371 of the shooting confirmation pattern 37 remains displayed as being ready to be photographed (for example, the prompt symbol 371 in FIG. 4A is displayed as a tick). After the initial image is captured, the prompt symbol 371 of the shooting confirmation pattern 37 continues to be displayed as unavailable (for example, the prompt symbol 371 in FIG. 4B is displayed as a cross), until the shooting conditions of the target image are met. In this embodiment, each preselected focus position corresponds to a target pattern 33 . When the focus selection pattern 31 frames the target pattern 33 corresponding to the unphotographed preselected focus position, it is considered that the shooting condition is met. At this time, the photographing device 20 will correspondingly photograph a target image.

In this embodiment, the shooting confirmation pattern 37 uses prompt symbols 371 to represent whether the shooting conditions are met or not. In other embodiments, the photographing confirmation pattern 37 can be displayed, which means that the photographing condition is met, and vice versa. When the shooting conditions are satisfied, the target image can be obtained by manual shooting or automatic shooting.

Please refer to FIG. 4B , which is a schematic diagram of a user interface displayed on the screen after the shooting device shoots an initial image. Compared with FIG. 4A , the hint pattern here further includes a navigator 35 . The scatter diagram 35 is used to display a plurality of preselected focus positions corresponding to the initial positions.

When the posture of the photographing device 20 is changed, the scene displayed on the preview screen will also change correspondingly. Correspondingly, the position of the target pattern 33 in the preview screen will also change. On the other hand, the focus selection pattern 31 is still located at the center of the screen 301 , and the position of the focus selection pattern 31 will not change due to the content of the preview image changing.

Therefore, according to whether the target image can be captured, the relative position between the focus selection pattern 31 and the target pattern 33 may include two types.

A relative position between the focus selection pattern 31 and the target pattern 33 is that the target pattern 33 is framed by the focus selection pattern 31 . At this time, the shooting condition is satisfied, and the shooting device 20 will shoot the target image. In this case, the focus selection pattern 31 and the target pattern 33 are displayed in an active mode.

Another relative position between the focus selection pattern 31 and the target pattern 33 is that the target pattern 33 is not covered by the focus selection pattern 31 . At this time, the shooting condition is not established, so the focus acquisition pattern 31 and the target pattern 33 are displayed in a standby mode.

In response to switching between the active mode and the waiting mode, the brightness parameters, transparency parameters, grayscale parameters or hue parameters of the focus pattern 31 and the target pattern 33 can also be changed correspondingly.

In this embodiment, a scatter diagram 35 representing the distribution of preselected focus positions is displayed on the upper left of the screen 301 . Each indication in the scatter diagram 35 represents a preselected focus position, therefore, the number of pointers is equal to the number of preselected focus positions. Indicators are further explained below.

Please refer to FIG. 5A , which is a schematic diagram of a pre-selected focus position of the camera lens facing the central parallel. Assuming that on the central parallel Lc, the first preselected focus position P1 corresponds to the positive direction of the y-axis; the second preselected focus position P2 corresponds to the positive direction of the x-axis; the third preselected focus position corresponds to the negative direction of the y-axis; and, The fourth preselected focus position P4 corresponds to the negative direction of the x-axis.

Please refer to FIG. 5B , which is a schematic diagram of a pre-selected focus position where the lens of the photographing device faces the upper latitude. When the photographing device 20 is used to photograph the preselected focus position corresponding to the upper latitude line Lu, there is an included angle between the photographing device 20 and the horizontal plane (ie, the x-y plane). FIG. 5B assumes that the fifth preselected focus position P5 and the sixth preselected focus position P6 are selected on the upper parallel Lu.

Please refer to FIG. 5C , which is a schematic diagram of a pre-selected focus position where the lens of the photographing device faces the lower latitude. When the photographing device 20 is used to photograph the preselected focus position corresponding to the lower latitude line Ld, there is an included angle between the photographing device and the horizontal plane (ie, the x-y plane). FIG. 5C assumes that the seventh preselected focus position P7 and the eighth preselected focus position P8 are selected on the lower parallel Lu.

Please refer to FIG. 6 , which is a schematic diagram further illustrating the corresponding relationship between the scatter diagram and the preselected focus position. Wherein, it is assumed that the scatter diagram 35 includes three columns of indicators CP1 ′, CP2 ′, CP3 ′, CP4 ′, CP5 ′, CP6 ′, CP7 ′, and CP8 ′, and each indicator corresponds to a preselected focus position. In addition, the relative positions of the indicators CP1 ′, CP2 ′, CP3 ′, CP4 ′, CP5 ′, CP6 ′, CP7 ′, and CP8 ′ in the scatter diagram 35 also correspond to the relative positions of the preselected focus positions.

The fifth index (CP5') and the sixth index (CP6') contained in the first column of the scatter diagram 35 are used to represent the fifth preselected focus position (CP5), the sixth preselected focus position (CP6) shown in FIG. 5B ). The first index (CP1'), the second index (CP2'), the third index (CP3'), and the fourth index (CP4') contained in the second column of the scatter diagram 35 are used to represent the A first preselected focus position (CP1), a second preselected focus position (CP2), a third preselected focus position (CP3), a fourth preselected focus position (CP4). The seventh index (CP7') and the eighth index (CP8') contained in the third column of the scatter diagram 35 are used to represent the seventh preselected focus position (CP7), the eighth preselected focus position (CP8) shown in FIG. 5C ).

In the scatter diagram 35 , the pointer ( CP3 ′) at the center of the scatter diagram 35 corresponds to the preselected focus position corresponding to the initial image, and the rest of the pointers correspond to other preselected focus positions. The pointers in the scatter diagram 35 are displayed in three states, which respectively represent whether the corresponding target image has been photographed, will be photographed or has not been photographed.

If the target image corresponding to the preselected focus position has not been captured yet, a pointer corresponding to the target image is prompted with the first display appearance. If the target image corresponding to the preselected focus position has been captured, a pointer corresponding to the target image is prompted with the second display appearance. If the target image corresponding to the preselected focus position is about to be shot, a pointer corresponding to the target image is prompted with a third display appearance.

For example, in Fig. 6, for the pre-selected focus positions (CP3, CP6) that have been selected and taken corresponding original images, the corresponding indicators (CP3', CP6') are marked with dotted shading; The pre-selected focus positions (CP1, CP4, CP5, CP7, CP8) that have been photographed are marked with shading in the direction of diagonal lines and the corresponding indicators (CP1', CP4', CP5', CP7', CP8'); The pattern 31 is framed, representing the preselected focus position (CP2) to be photographed, and the corresponding index (CP2') is marked with a darker shading.

In practical applications, the display appearance of the pointer may be changed by changing brightness parameters, transparency parameters, grayscale parameters, or hue parameters.

Furthermore, the screen 301 can also display a plurality of target patterns 33 corresponding to the pre-selected focus positions on the preview screen. In FIG. 6 , although the target pattern 33 of the second preselected focus position is framed by the focus selection pattern 31 , the target patterns 33 of other preselected focus positions adjacent to it are also displayed on the screen 301 . After the user shoots an image corresponding to the target pattern 33 at the second preselected focus position, he can refer to the adjacent target patterns 33 displayed on the screen 301 and decide whether to continue shooting. In addition, the screen 301 may also display the relative positions of the pre-selected focus positions represented by the target patterns 33 through the display of grid lines.

As mentioned above, with the prompt patterns (including the focus selection pattern 31 , the target pattern 33 , and the shooting confirmation pattern 37 ), the photographing device 20 of the present invention can quickly capture a panoramic image of the spherical space. When this approach is adopted, the photographing device 20 only shoots the target image when the pre-selected focus position is indeed in focus. Therefore, the shooting quality of the panoramic image can be ensured.

Through the display of the prompt pattern, the user can determine the sequence of the shooting target images according to personal preference. It should be noted that the application of the present invention is not limited to shooting panoramic images in spherical space.

Please refer to FIG. 7A , it is assumed that the shooting device generates a panoramic image in a cylindrical range. In this cylindrical range, it is assumed that the images captured by the photographing device 50 correspond to several pre-selected focus positions on the five latitudes (Lu2, Lu1, Lc, Ld1, Ld2). Within the cylinder, the lengths of the parallels are equal. Therefore, it can be assumed that the number of preselected focus positions on each latitude is equal.

Please refer to FIG. 7B, which is a scatter diagram representing the preselected focus positions shown in FIG. 7A. Here, four preselected focus positions are respectively selected on each latitude (Lu2, Lu1, Lc, Ld1, Ld2). Therefore, the five columns of indicators from top to bottom respectively correspond to the four pre-selected focuses of the second upper latitude Lu2, the first upper latitude Lu1, the center latitude Lc, the first lower latitude Ld1, and the second lower latitude Ld2 in FIG. 7A Location. Similarly, the display appearance of the pointer in the scatter diagram 35 can be changed according to whether the corresponding pre-selected focus position is not photographed, has been photographed, or is about to be photographed.

To sum up, the scatter diagram 35 allows the user to know more clearly whether each pre-selected focus position has been selected. The user can also see from the scatter diagram 35 which preselected focus positions have not yet been selected. Therefore, the shooting process of the panoramic image will be more efficient.

Another embodiment of the present invention defines two display modes. The area in the preview screen will adopt different display modes according to whether it contains the captured target image or not. When the area of the preview image does not include the captured target image, the area of the preview image is displayed in a first display mode. On the contrary, in the area of the preview image, the area of the captured target image is displayed in a second display mode.

The display parameters used in the first display mode and the second display mode can be set to different values. For example, the following embodiments assume that the first display mode corresponds to a first transparency, and the second display mode corresponds to a second transparency.

Please refer to FIG. 8A , which is a schematic diagram of displaying a preview image in the first display mode. In FIG. 8A , the target image corresponding to the second preselected focus position ( CP2 ) has not been captured yet. Therefore, the preview image is displayed with the first transparency.

Please refer to FIG. 8B , which is a schematic diagram showing a preview image displayed by the photographing device in the first display mode and the second display mode. Here, the target image corresponding to the second preselected focus position ( CP2 ) has been captured, so in the preview screen, the region of the target image corresponding to the second preselected focus position is displayed with the second transparency. As for, in the preview image, other regions of the target image that are not corresponding to the second preselected focus position are still represented by the first transparency.

If the pre-selected focus position is located on a spherical surface, the left and right sides of the captured target image (ie, the area displayed with the second transparency) in the preview screen are arcs. Furthermore, if the selected pre-selected focus position is located on the upper latitude, the length of the upper edge of the corresponding target image will be slightly smaller than the length of the lower edge. Alternatively, if the selected pre-selected focus position is located on the lower latitude, the length of the upper edge of the corresponding target image will be slightly longer than the length of the lower edge.

Please refer to FIG. 8C , which is a schematic diagram of a preview screen of the camera during the process of finding another pre-selected focus position. FIG. 8C assumes that after the user shoots the target image corresponding to the second preselected focus position ( CP2 ), the user searches for another target pattern 33 by rotating the shooting device 20 . That is, the target pattern 33 corresponding to the first preselected focus position (CP1).

It can be seen from the figure that as the camera device 20 rotates, the outline of the region with the second transparency will also change simultaneously. For example, by comparing FIG. 8B with FIG. 8C , it can be seen how the area with the second transparency changes when the photographing device 20 is turned to the right. In FIG. 8B , the lengths of the left and right sides of the region with the second transparency are substantially equal. However, in FIG. 8C, the left side of the region having the second transparency is longer than the right side. Furthermore, in FIG. 8C , both the upper edge and the lower edge of the region with the second transparency are curved.

As mentioned above, when this shooting method is adopted, the area with the first transparency displayed on the preview screen gradually decreases, and the area with the second transparency gradually increases. After the user finishes shooting all target images, the preview image will remain displayed with the second transparency.

Please refer to FIG. 9 , which is a block diagram of the photographing device. The photographing device 20 includes a screen 301 , a control unit 303 , an attitude sensing unit 307 , and a lens 305 . The control unit 303 is electrically connected to the other three. The posture sensing unit 307 is used for sensing the posture of the photographing device 20 . The attitude sensing unit 307 can be a gyroscope.

The operation of the photographing device 20 includes two stages: a photographing stage and a displaying stage. In the display stage, when the user uses the screen 301 to watch the spherical panoramic image, the visual feeling is equivalent to being in the center of the sphere and watching the panoramic image attached to the surface of the sphere. In addition to the aforementioned reminder patterns provided during the shooting phase, the present invention also uses reminder patterns when displaying panoramic images.

Due to the limitation that the screen 301 is two-dimensional, the photographing device 20 cannot directly use the screen 301 to present a three-dimensional panoramic image. Therefore, what is displayed on the screen 301 is actually a virtual image generated by perspective projection of the panoramic image. Wherein, the way of perspective projection can adopt spherical perspective projection method (spherical perspective projection), or cylindrical perspective projection method (cylindrical perspective projection).

According to an embodiment of the present invention, the panoramic image displayed on the screen 301 will be adjusted according to the posture of the shooting device 20 and/or the user's operation (such as a reset (resume) operation, a zoom operation or a rotation operation) . Correspondingly, the prompt pattern and screen content displayed on the screen 301 will also change.

Please refer to FIG. 10 , which is a schematic flowchart of displaying a virtual image range according to a panoramic image. First, a panoramic image is provided (step S321). Next, whether the user performs various operations on the photographing device 20 is sensed, and an operation signal is generated accordingly (step S323). The target position is calculated or estimated according to the operation signal. The target position represents the position where the user's line of sight is directed in the spherical (cylindrical) space when the user views the panoramic image. After that, perform perspective projection on the panoramic image according to the target position (step S325 ), and display the virtual image (step S327 ).

Please refer to FIG. 11 , which is a schematic diagram showing a virtual image. As shown in FIG. 11 , the screen 301 also displays a reset prompt pattern 45 and a perspective pattern 46 . The following uses a radar chart as an example of the viewing angle schema 46 . When the user chooses to reset the lifting pattern 45, the virtual image displayed on the screen 301 will be based on a preset position. Wherein, the preset position may be the initial position corresponding to the initial image, or set by the user according to personal preference.

Please refer to FIG. 12 , which is a schematic diagram showing a viewing angle using a radar chart. Wherein, the gray scale sector 27 represents the viewing angle between the preset position and the target position in the virtual image. Through the full-view perspective schema corresponding to the panoramic image, the user can grasp the influence of his operation on the virtual image in a more comprehensive manner. Of course, the viewing angle schema is not limited to the radar graph. For example, pie charts or other types of icons can also serve as perspective schemas.

It is assumed here that the horizontal direction of the radar chart corresponds to the x-axis direction of the panoramic image, and the vertical direction of the radar chart corresponds to the y direction of the panoramic image. Wherein, the right side of the radar chart represents the positive direction of the x-axis of the panoramic image, and the left side of the radar chart represents the negative direction of the x-axis of the panoramic image. The upper part of the radar chart represents the positive direction of the y-axis of the panoramic image, and the lower part of the radar chart represents the negative direction of the y-axis of the panoramic image.

Furthermore, the size of the concentric circles in the radar image represents the distance between the target position and the z-axis. For example: when the arcs of the grayscale sector are located in smaller concentric circles, it means that the target position is closer to the center of the sphere.

Please refer to FIG. 13 , which is a schematic diagram showing another perspective using a radar chart. In FIG. 12 , the arc of the gray-scale sector faces upward; in FIG. 13 , the arc of the gray-scale sector faces downward. Since the arcs of the gray scale fan are opposite to each other in FIG. 12 and FIG. 13 , it means that the target positions in FIG. 12 and FIG. 13 are opposite to each other.

Users can operate according to their personal preferences when viewing virtual images. Users can perform scaling operations, rotation operations, recovery operations, and the like. The photographing device can sense the user's operation through the touch screen 301 or the gesture sensing unit 307 , and generate an operation signal correspondingly. As the operation signal is generated, the target position will also change.

When the screen 301 senses that the user performs a zoom operation, the screen 301 will correspondingly generate a zoom operation signal. After obtaining an imaging distance, the control unit 303 updates the target position according to the imaging distance.

When the rotation operation is sensed, the gesture sensing unit 307 or the screen 301 will correspondingly generate a rotation operation signal. The reason for the rotation operation may be that the posture of the shooting device 20 itself is rotated by the user's grip. Alternatively, another reason for the rotation operation may be caused by a touch track on the screen 301 . Through the posture sensing unit 307 or the screen 301 , the control unit 303 obtains the rotation direction and the rotation angle correspondingly. Afterwards, the control unit 303 will update the target position according to the rotation direction and rotation angle.

The reply operation can be sensed through the screen 301 . When the return operation signal is sensed, the control unit 303 returns the target position where the user's line of sight is directed from the current position to the preset position. Then the projection generates a preset virtual image. The preset position may be a target position perpendicular to the x-y plane, or a preset target position pre-selected by the user.

Thereafter, the control unit 303 controls the virtual image displayed on the screen 301 according to the updated target position. Therefore, the virtual image displayed by the shooting device 20 can be dynamically adjusted according to the user's operation.

Furthermore, the photographing device 20 can also photograph the entire or partial range of the virtual image. Please refer to FIG. 14 , which is a schematic diagram of selecting the entire virtual image. The virtual image 60 shown in FIG. 14 includes houses and trees. The user can select the boundary of the virtual image 60 through the marquee 491 by dragging. Wherein, the range covered by the marquee 491 is defined as a selected image.

Please refer to FIG. 15 , which is a schematic diagram of selecting a part of the virtual image as the selected image. This figure shows that the selected image is based on the virtual image 60 in FIG. 14 , and only a small area is selected by the marquee 492 . For example: in the marquee box shown in Figure 15, only houses are selected but no trees are selected as the selected image.

The outline of the marquee 492 need not be defined. For example, the user can arbitrarily select a preferred range on the virtual image 60 . Thereafter, images within the selected range (selected images) will be used for display or stored

According to the capturing method described in FIG. 14 and FIG. 15 , the user can select the desired part of the virtual image 60 as the selected image. Wherein, the size of the selected image is smaller than or equal to the virtual image.

Accordingly, the user can further take a snapshot of a virtual image of personal preference in the panoramic image. Therefore, even if the user fails to select an ideal angle due to the limitations of the shooting environment when shooting, he can still choose the shooting angle and shooting position in the panoramic image afterwards to capture a suitable selected image.

As mentioned above, after the initial image is captured, the photographing device 20 will automatically display the corresponding prompt pattern (for example, the target pattern 33 , the scatter diagram 35 and the mark, etc.). Following the prompt pattern, the user can easily take a suitable target image.

When displaying a panoramic image, the viewing angle pattern allows the user to view the panoramic image in a more comprehensive manner. Moreover, when displaying the virtual image, the shooting device 20 also provides the function of capturing the virtual image. Therefore, the panoramic image shooting method, display method, and image capture method provided by the shooting device 20 can be operated more easily by the user.

To sum up, although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be defined by the appended claims.

Claims (9)

1. an image pickup method for full-view image, comprises following steps:

Define the required multiple preliminary election focusing positions of a full-view image;

Show a scatter diagram that comprises the multiple pointers that represent the plurality of preliminary election focusing position;

Take the multiple target images corresponding with the plurality of preliminary election focusing position;

Change the demonstration outward appearance of the plurality of pointer according to the shooting state of the plurality of target image; And

Produce this full-view image according to the plurality of target image.

2. image pickup method according to claim 1, wherein, the step that changes the demonstration outward appearance of the plurality of pointer according to the shooting state of the plurality of target image comprises following steps:

In the time that target image corresponding to this preliminary election focusing position is not yet taken, to there is the pointer prompting of one first demonstration outward appearance;

In the time that target image corresponding to this preliminary election focusing position has been taken, to there is the pointer prompting of one second demonstration outward appearance; And

In the time that target image corresponding to this preliminary election focusing position is about to be taken, to there is the pointer prompting of one the 3rd demonstration outward appearance.

3. image pickup method according to claim 1, wherein the demonstration outward appearance of these pointers is to change according to a luminance parameter, a transparency parameter, a GTG parameter or a colorimetric parameter.

4. an image pickup method for full-view image, for an electronic installation, this image pickup method comprises following steps:

Show a preview screen with one first display mode;

Calculate and produce the required multiple preliminary election focusing positions of this full-view image, wherein the plurality of preliminary election focusing position is to be positioned at a three dimensions;

Because of rotation that should electronic installation, show that the one of the plurality of preliminary election focusing position is in this preview screen; And

When aiming at this one preliminary election focusing position, make the region that shows a corresponding target image in this preview screen change into one second display mode from this first display mode.

5. image pickup method according to claim 4, wherein,

This first display mode points out the corresponding target image of this preliminary election focusing position to be not yet taken; And

This second display mode points out the corresponding target image of this preliminary election focusing position to be taken.

6. image pickup method according to claim 4, also comprises following steps:

Take the multiple target images corresponding with the plurality of preliminary election focusing position.

7. image pickup method according to claim 6, the step of wherein taking the multiple target images corresponding with the plurality of preliminary election focusing position comprises following steps:

Pattern is chosen in demonstration one focusing; And

In the time that target pattern corresponding to this one preliminary election focusing position chosen pattern frame and selected by this focusing, show that one takes and confirms pattern.

8. image pickup method according to claim 7, the step of wherein taking the multiple target images corresponding with the plurality of preliminary election focusing position also comprises following steps:

In the time that target pattern corresponding to this one preliminary election focusing position chosen pattern institute frame and selected by this focusing, pattern is chosen in this focusing and this target pattern is converted to an aggressive mode from a standby mode.

9. image pickup method according to claim 8, wherein to choose pattern and this target pattern be in response to this standby mode and this aggressive mode and change a luminance parameter, a transparency parameter, a GTG parameter or a colorimetric parameter in this focusing.