CN101576996A - Processing method and device for realizing image zooming - Google Patents

Abstract

The invention discloses a processing method and device for realizing image scaling. In the solution provided by the present invention, the user input information is obtained; according to the corresponding relationship between the set user input information and the scaling rules, the scaling rules corresponding to the user input information are determined; the target area is determined according to the scaling rules, and according to the set The scaling rules determine the display ratio of the image in the target area; and the initial coordinates of the zoomed image can be further determined according to the scaling rules. It can be seen that a series of related image scaling operations can be obtained by obtaining simple operations of the user. Relevant parameters do not need to add any software and hardware, and the implementation cost is very low. Since there is no need for the user to perform too many operations, and the user does not need to input instructions, and the user's needs are directly fed back to the original playback interface, the implementation of the solution of the present invention will not affect the user's experience at all.

Description

A processing method and device for realizing image scaling

technical field

The invention relates to image processing technology, in particular to a processing method and device for realizing image scaling.

Background technique

Video zoom-in/zoom-out refers to the technology of zooming in/out part of the video during video playback. At present, it is usually realized by screen capture, that is, each frame displayed by the output device is intercepted, and then the target area is selected, and the video of the target area is enlarged/reduced by an algorithm, and then replaced by the original image for display on the output device.

Taking video scaling as a reference, as shown in Figure 1A, video scaling mainly includes two parts: original video and enlarged/reduced video. The original video refers to the video image output by the hardware or software itself according to the set format. The enlarged/reduced video refers to a video image that includes original video content and is displayed after the original video content is enlarged/reduced. The enlarged/reduced video has various sizes, and the user can freely set the enlarged/reduced video size.

When zooming in/out the original video, the user needs to select the target area of the original video to be zoomed in/out, and determine the size of the zoom in/out, and then the relevant device will zoom in/out the video in the target area according to the user's requirements. It can be seen that the zoom in/out of the video must be performed by the user to input a clear command, which can be the user directly issue the default zoom in/out command, and the related device will zoom in/zoom out the default target area video according to the default zoom in/out command; It can also be that the user selects two points with the mouse to construct a rectangular area, and then the user inputs the size of the enlargement/reduction, and the related device enlarges/reduces the video of the rectangular area according to the size of the enlargement/reduction required by the user.

Since the user needs to input instructions, it is necessary to add the implementation of the input interface to the relevant equipment that realizes zoom in/out, which will increase the complexity of video zoom in/out; although the user can also use the default zoom in/zoom out commands to the default target Zooming in/out of the region video, but because different users are interested in different regions of the original video, and the specific functions of video zooming in/out expected to be implemented are diverse, therefore, this will greatly affect the user experience.

In addition, there is currently a solution to zoom in/out video based on a mask, as shown in Figure 1B, specifically by adding a layer of playback interface to the original video, so that the original video can be output to the original output device without being affected However, due to the added playback interface, the original video will be blocked and cannot be displayed; copy the original video content, select the target area video to zoom in/out, and display it in the added playback interface.

In this processing method, on the premise of ensuring efficiency, it is necessary to add hardware for realizing the mask in the relevant equipment for realizing zoom-in/zoom-out, which will also increase the complexity of video zoom-in/zoom-out.

Contents of the invention

In view of this, the main purpose of the present invention is to provide a processing method and device for implementing image scaling, which facilitates users to implement image scaling, improves user experience, and saves implementation costs.

In order to achieve the above object, technical solution of the present invention is achieved in that way:

A processing method for implementing image scaling, the method comprising: obtaining user input information; determining a scaling rule corresponding to the user input information according to the corresponding relationship between the set user input information and the scaling rule; according to the scaling rule Determine the target area, and determine the display ratio of the image in the target area according to the scaling rule.

After the determination of the target area and the display ratio, the method further includes: determining the starting coordinates of the zoomed image according to the scaling rule.

Set the initial coordinates of the original image to be (0, 0), the width to be W0, and the height to be H0, and the obtaining of user input information includes: obtaining two coordinate positions input by the user through the mouse, and the coordinates input by the user for the first time through the mouse is (x1, y1), and the coordinates that the user inputs through the mouse for the second time are (x2, y2); the scaling rule corresponding to the user input information is determined according to the corresponding relationship between the set user input information and the scaling rule, Determining the target area, the display ratio of the image in the target area, and the initial coordinates of the zoomed image according to the scaling rules, including: determining that the initial coordinates of the target area are (x1, y1), width W1=|x2-x1|, height H1=|y2-y1|, judge whether x1 is smaller than x2, if x1 is smaller than x2, enlarge the image of the target area, judge whether W0/W1 is not smaller than H0/H1, if W0/W1 is not smaller than H0/H1, determine the target area The display ratio of the image is R=H0/H1; if W0/W1 is less than H0/H1, determine that the display ratio of the image in the target area is R=W0/W1; if x1 is not less than x2, reduce the image in the target area and judge W0/ Whether W1 is not less than H0/H1, if W0/W1 is not less than H0/H1, determine the display ratio of the target area image as R=H0/H1; if W0/W1 is less than H0/H1, determine the display ratio of the target area image as R =W0/W1.

After the display ratio of the determined target area image is R=H0/H1, it further includes: determining that the starting coordinates of the enlarged image are (x, 0), the width is W1*R, and the height is H0; the determined target area After the display ratio of the image is R=W0/W1, it further includes: determining that the starting coordinates of the enlarged image are (0, y), the width is W0, and the height is H1*R; the display ratio of the determined target area image is After R=H0/H1, it further includes: determining that the starting coordinates of the reduced image are (x, y), the width is W1/R, and the height is H1/R; the display ratio of the determined target area image is R=W0 After /W1, it further includes: determining that the starting coordinates of the reduced image are (x, y), the width is W1/R, and the height is H1/R.

After the determination of the display ratio of the image of the target area, it further includes: performing scaling processing on the image of the target area according to the display ratio, and positioning the zoomed image at the determined starting coordinate.

After performing the scaling process on the image of the target area, it further includes: restoring the display size of the image of the target area when it is determined that the user operation satisfies a valid condition.

When the determination that the user operation meets the effective conditions restores the display size of the target area image, it includes: obtaining the operation of the user double-clicking the mouse, the coordinates of the user double-clicking the mouse for the first time are (x3, y3), and the time is t1, and the second time the mouse is double-clicked The coordinates are (x4, y4), and the time is t2; judge whether |x4-x3| is less than the set displacement threshold, and whether t2-t1 is less than the set time threshold, if they are all satisfied, then determine that the user operation is valid and restore The display size of the image in the target area; otherwise, it is determined that the user operation is invalid and the display size of the image is not restored.

The method further includes step A: capturing user operations, determining a filter rule corresponding to the user operation according to the set correspondence between user operations and filter rules; determining the initial coordinates of the image according to the filter rules, Move the zoomed image.

The starting coordinates of the original image are set to be (0, 0), the width is W0, and the height is H0. The step A includes: capturing the coordinates (x5, y5) input by the user through the mouse, and capturing the coordinates (x6) input by the user through the mouse. , y6); if x6-x5≥0, y6-y5≥0, the zoomed image moves to the bottom right of the display screen, and the starting coordinates of the moved zoomed image are (x2-x1, y2-y1), The width is W0-(x2-x1), the height is H0-(y2-y1); if x6-x5≥0, y6-y5<0, the zoomed image moves to the upper right of the display screen, and the zoomed image after moving The starting coordinates of the image are (x2-x1, 0), the width is W0-(x2-x1), and the height is H0+(y2-y1); if x6-x5<0, y6-y5≥0, the zoomed image Move to the bottom left of the display screen, the starting coordinates of the moved zoomed image are (0, y2-y1), the width is W0+(x2-x1), and the height is H0-(y2-y1); if x6-x5 <0, y6-y5<0, the zoomed image moves to the upper right of the display screen, the starting coordinates of the moved zoomed image are (0, 0), the width is W0+(x2-x1), and the height is H0+ (y2-y1).

After performing scaling processing on the image of the target area, it further includes: performing sharpening processing on the zoomed image.

The sharpening processing of the zoomed image includes: using linear interpolation to copy pixels of the zoomed image and adjusting pixel values, and using a high-pass filter to filter blurred colors of the image.

A processing device for realizing image scaling, the device includes: a storage unit, an input detection unit, a rule determination unit, and a parameter determination unit, wherein the storage unit is used to store preset user input information and scaling rules Correspondence; the input detection unit is used to obtain user input information; the rule determination unit is used to determine the scaling rule corresponding to the user input information according to the corresponding relationship between the user input information and the scaling rule; The parameter determination unit is used to determine the target area according to the scaling rule, and determine the display ratio of the target area image according to the scaling rule.

The parameter determining unit is further configured to: determine the starting coordinates of the zoomed image according to the scaling rule.

The device further includes: a scaling processing unit, configured to perform scaling processing on the target area image according to the display ratio, and position the scaled image at the determined starting coordinate.

The device further includes: a valid judging unit, configured to notify the scaling processing unit to restore the display size of the image when it is determined that the user operation is valid; the scaling processing unit is configured to stop zooming the image in the target area.

The device further includes: an operation capture unit and a filter processing unit, the storage unit is further used to store the preset correspondence between user operations and filtering rules; the operation capture unit is used to capture user operations; the filter The processing unit is configured to determine a filtering rule corresponding to the user operation according to the correspondence between the user operation and the filtering rule, determine the starting coordinates of the image according to the filtering rule, and move the zoomed image according to the starting coordinates .

The device further includes: a sharpening processing unit, which performs sharpening processing on the zoomed image.

In the solution of the present invention, the user input information is obtained; according to the corresponding relationship between the set user input information and the scaling rules, the scaling rules corresponding to the user input information are determined; the target area is determined according to the scaling rules, and according to the scaling The rule determines the display ratio of the image in the target area; and the starting coordinates of the zoomed image can be further determined according to the scaling rule. It can be seen that a series of relevant parameters related to the image zooming operation can be obtained by obtaining the simple operation of the user , does not need to add any software and hardware, and the implementation cost is very low. Since there is no need for the user to perform too many operations, and the user does not need to input instructions, and the user's needs are directly fed back to the original playback interface, the implementation of the solution of the present invention will not affect the user's experience at all.

In addition, the solution of the present invention also provides related operations related to image zooming, so that the effect of the image zooming operation is more ideal; moreover, it is also possible to dynamically change the image that needs to be zoomed according to the needs of the user.

Description of drawings

FIG. 1A is a schematic diagram of zooming in on a target area video;

FIG. 1B is a schematic diagram of video scaling realized by a mask;

Fig. 2 is the flow chart of realizing image scaling in the present invention;

FIG. 3 is a flow chart of a specific embodiment for realizing image scaling in the present invention;

FIG. 4A is a first schematic diagram of an enlarged target area image in the present invention;

Fig. 4B is a schematic diagram of the target area before amplification in the present invention;

FIG. 4C is an enlarged schematic diagram of the target area in the present invention;

Figure 4D is a schematic diagram of the actual enlarged area in the present invention;

Fig. 5 is a second schematic diagram of an enlarged target area image in the present invention;

Fig. 6A is a schematic diagram of reducing the image of the target area in the present invention;

Fig. 6B is a schematic diagram of the target area before shrinking in the present invention;

FIG. 6C is a schematic diagram of the reduced target area in the present invention;

FIG. 7A is a first schematic diagram of image movement according to user operations in the present invention;

Fig. 7B is a second schematic diagram of image movement according to user operations in the present invention;

Fig. 7C is a third schematic diagram of image movement according to user operations in the present invention;

FIG. 7D is a fourth schematic diagram of image movement according to user operations in the present invention;

Fig. 8 is a schematic diagram of comparison before and after sharpening in the present invention;

FIG. 9 is a schematic structural diagram of an image scaling device in the present invention.

Detailed ways

Fig. 2 is the flow chart that realizes image scaling of the present invention, as shown in Fig. 2, the concrete processing process that realizes image scaling in the present invention comprises the following steps:

Step 201: preset the corresponding relationship between user input information and scaling rules.

Step 202 to Step 203: Obtain user input information, and determine a scaling rule corresponding to the user input information according to the set correspondence between the user input information and the scaling rule.

Step 204: Determine the target area according to the scaling rule, and determine the display ratio of the target area image according to the scaling rule.

Step 205: Further, the initial coordinates of the zoomed image may also be determined according to the scaling rule. The starting coordinates of the zoomed image can also be determined randomly, or can be specified by the system, as long as the display screen can fully display the contents of the zoomed image.

The images mentioned in the present invention may be dynamic images, videos, etc., or static images.

Below in conjunction with the flow process shown in Figure 3, the specific implementation process of the present invention is described in detail, as shown in Figure 3, the specific processing process includes the following steps:

Step 301: Set the initial coordinates of the original image as (0, 0), the width as W0, and the height as H0. Obtain the two coordinate positions input by the user through the mouse. The coordinates of the user's first click of the mouse are A(x1, y1), the user drags the mouse, and the coordinates of the user's second click of the mouse are B(x2, y2). Subsequent steps are all processed according to scaling rules.

Step 302: Determine the starting coordinates of the target area to be scaled as (x1, y1), the width W1=|x2-x1| of the target area, and the height H1=|y2-y1| of the target area. According to user habits, the starting coordinates of the target area may refer to the coordinates of the upper left corner of the target area. At this time, the target area is the area to the right and downward of the starting coordinates. Of course, the starting coordinates of the target area may also refer to the coordinates of the lower right corner of the target area. In this case, the target area is the leftward and upward area of the starting coordinates. Similarly, the starting coordinates of the target area may also refer to the coordinates of the lower left corner or the upper right corner of the target area.

Step 303: Judging whether x1 is smaller than x2, if x1 is smaller than x2, go to step 304; if x1 is not smaller than x2, go to step 308.

Step 304: Enlarge the image of the target area.

Step 305: Determine whether W0/W1 is not less than H0/H1, if W0/W1 is not less than H0/H1, perform step 306; if W0/W1 is less than H0/H1, perform step 307.

Step 306: Determine the relevant parameters for zooming in on the image of the target area, wherein, the display ratio R=H0/H1; the starting coordinate of the zoomed-in image is (x, 0); the width of the zoomed-in image W=W1*R; The height of the subsequent image is H=H1*R=H1*(H0/H1)=H0, and the image of the target area can be enlarged subsequently according to the display ratio to end the current process. The amplification process according to the above parameters is shown in Fig. 4A.

Preferably, in order to place the enlarged image in the middle of the display screen as much as possible, x=(W0-(W0-2*x1)*R)/2 can be set, so that the starting coordinates of the enlarged image are ((W0 -(W0-2*x1)*R)/2, 0); You can also set x=(W0-W1*R)/2, so that the starting coordinates of the enlarged image are ((W0-W1*R) /2,0). x can also be other values, such as x=x1/R, in this way, the starting coordinate of the enlarged image is (x1/R, 0). The above are just some exemplary descriptions of the specific implementation of the starting coordinates of the enlarged image in the present invention, and are not the only implementations described above.

Taking W1=H1 as an example, as shown in FIG. 4B , the implementation principle of step 306 is described. The target area shown in Figure 4B, that is, the black square, is enlarged according to the above parameters, as shown in Figure 4C. Such an enlargement will have a blank part in Figure 4C. Therefore, the actually enlarged area should be smaller than that in Figure 4D. The area within the rectangle can fill the blank portion in Figure 4C, and the area between the small rectangle and the square target area can be realized by enlarging the edge of the target area.

Step 307: Determine relevant parameters for zooming in on the image of the target area, where the display ratio R=W0/W1; the starting coordinates of the zoomed-in image are (0, y); the width of the zoomed-in image W=W1*R=W1 *(W0/W1)=W0; the height of the enlarged image H=H1*R, and the image of the target area can be enlarged subsequently according to the display ratio, and the current process is ended. According to the above parameters, the zoom-in process is shown in Figure 5.

Preferably, in order to place the enlarged image in the middle of the display screen as much as possible, y=(H0-(H0-2*y1)*R)/2 can be set, so that the starting coordinates of the enlarged image are (0, (H0-(H0-2*y1)*R)/2); You can also set y=(H0-H1*R)/2, so that the starting coordinates of the enlarged image are (0, (H0-H1* R)/2). y can also be other values, such as y=y1/R, in this way, the starting coordinate of the enlarged image is (0, y1/R). The above are just some exemplary descriptions of the specific implementation of the starting coordinates of the enlarged image in the present invention, and are not the only implementations described above.

Step 308: Reduce the image of the target area.

Step 309: Determine whether W0/W1 is not less than H0/H1, if W0/W1 is not less than H0/H1, perform step 310; if W0/W1 is less than H0/H1, perform step 311.

Step 310: Determine the relevant parameters for reducing the image of the target area, wherein, the display ratio R=H0/H1; the starting coordinates of the reduced image are (x, y); the width of the reduced image W=W1/R; The height of the final image is H=H1/R, and then the image of the target area can be reduced according to the display ratio to end the current process. The reduction process performed according to the above parameters is shown in FIG. 6A , and FIG. 6B is the target area before reduction, and the reduced image obtained according to the above parameters is shown in FIG. 6C .

Preferably, in order to place the reduced image in the middle of the display screen as much as possible, x=(W0-(W0-2*x1)/R)/2, y=(H0-(H0-2*y1)/ R)/2, so the starting coordinates of the reduced image are ((W0-(W0-2*x1)/R)/2, (H0-(H0-2*y1)/R)/2). x and y can also be other values, for example, x=(W0/2)*(1-R), y=(H0/2)*(1-R), like this, the starting coordinates of the reduced image are ( (W0/2)*(1-R), (H0/2)*(1-R)); another example, x=(W0/2)*R, y=(H0/2)*R, so, The starting coordinates of the reduced image are ((W0/2)*R, (H0/2)*R)). The above are just some exemplary descriptions of the specific implementation of the starting coordinates of the reduced image in the present invention, and are not the only implementations described above.

Step 311: Determine the relevant parameters for reducing the image of the target area, where the display ratio R=W0/W1; the starting coordinates of the reduced image are (x, y), x=(W0-(W0-2*x1) /R)/2, y=(H0-(H0-2*y1)/R)/2; the width of the reduced image W=W1/R; the height of the reduced image H=H1/R, and the following can be displayed according to The ratio reduces the image of the target area, and the starting coordinates of the reduced image are ((W0-(W0-2*x1)/R)/2, (H0-(H0-2*y1)/R)/2) , end the current process.

Preferably, in order to place the reduced image in the middle of the display screen as much as possible, x=(W0-(W0-2*x1)/R)/2, y=(H0-(H0-2*y1)/ R)/2, so the starting coordinates of the reduced image are ((W0-(W0-2*x1)/R)/2, (H0-(H0-2*y1)/R)/2). x and y can also be other values, for example, x=(W0/2)*(1-R), y=(H0/2)*(1-R), like this, the starting coordinates of the reduced image are ( (W0/2)*(1-R), (H0/2)*(1-R)); another example, x=(W0/2)*R, y=(H0/2)*R, so, The starting coordinates of the reduced image are ((W0/2)*R, (H0/2)*R)). The above are just some exemplary descriptions of the specific implementation of the starting coordinates of the reduced image in the present invention, and are not the only implementations described above.

In order to meet the display needs, the relevant parameters obtained in the above calculation process can be rounded. After the relevant parameters of image scaling are determined, the specific processing involved in image scaling is exactly the same as the solution adopted in the prior art, and will not be repeated here.

For the process shown in Figure 3 above, the correspondence between the preset user input information and the scaling rules is specifically:

If the abscissa input by the user for the first time is smaller than the abscissa input for the second time, the image of the target area is enlarged, and the display ratio is determined according to the target area determined by the user input information, namely:

When the width ratio of the original image to the target area is not less than the height ratio, the display ratio is the height ratio of the original image to the target area; when the width ratio of the original image to the target area is smaller than the height ratio, the display ratio is the width ratio of the original image to the target area ;

If the abscissa input by the user for the first time is not smaller than the abscissa input for the second time, the image of the target area is reduced, and the display ratio is determined according to the target area determined by the user input information, namely:

When the width ratio of the original image to the target area is not less than the height ratio, the display ratio is the height ratio of the original image to the target area; when the width ratio of the original image to the target area is smaller than the height ratio, the display ratio is the width ratio of the original image to the target area .

Further, it may also be set to determine the starting coordinates of the enlarged/reduced image according to the target area determined by the user input information.

The above is only a description of the specific implementation of the present invention through a preferred embodiment, and it does not mean that the present invention can only be realized by using the scheme shown in FIG. 3 .

In order to make the operation of image scaling more concise and rapid, in the present invention, the display size of the image can be restored by double-clicking the mouse. However, due to the uncertainty of the user's operation intention and the different habits of each user, the stability of the user's operation is considered when double-clicking. Defines the valid conditions for whether the operation is valid. When the user operation meets the valid conditions, the display size of the image can be restored; otherwise, the display size of the image will not be restored. The specific processing flow is as follows: obtain the operation of the user double-clicking the mouse, the coordinates of the user's first double-clicking of the mouse are (x3, y3), and the time is t1, and the coordinates of the second double-clicking of the mouse are (x4, y4), and the time is t2, judge Whether |x4-x3| is less than the set displacement threshold LimitLen, and whether t2-t1 is less than the set time threshold LimitTime, if both are satisfied, that is, |x4-x3|<LimitLen, and t2-t1<LimitTime, then determine the user If the operation is valid, the display size of the image in the target area is restored; if any condition is not met, it is determined that the user operation is invalid, and the display size of the image in the target area is not restored. LimitLen and LimitTime are set in the system and can be set by the system or by the user. In consideration of system performance, according to experience, LimitLen can be set to 3 to 5 pixels, and LimitTime can adopt the system-defined double-click interval time.

In the process of the user viewing the zoomed image, the position of the zoomed image on the display screen needs to be constantly changed according to the user's needs. Therefore, in the present invention, the zoomed image can be moved by capturing the user dragging the mouse to change the zoom. The location of the final image on the display screen is used to implement the filtering operation of the target area, thereby realizing the display of dynamically changing zoomed image content to the user.

The specific processing process is as follows: pre-set the corresponding relationship between user operations and filtering rules; after capturing user operations, determine the corresponding filtering rules according to the set user operations and filtering rules; according to the filtering The rule determines the starting coordinates of the image by which to move the scaled image.

For example, if the user presses the right mouse button to select, capture the coordinates (x5, y5) that the user presses the right mouse button to select, and release the mouse after the user drags a certain area, captures the coordinates (x6, y6) when the user drags the mouse and releases it; according to The relationship between x5 and x6, y5 and y6 determines the way to move the image: if x6-x5≥0, y6-y5≥0, the zoomed image moves to the bottom right of the display screen, and the starting point of the zoomed image after moving The initial coordinates are (x2-x1, y2-y1), width W`=W0-(x2-x1), height H`=H0-(y2-y1), as shown in Figure 7A; if x6-x5≥0, y6-y5<0, the zoomed image moves to the upper right of the display screen, and the starting coordinates of the moved zoomed image are (x2-x1, 0), width W`=W0-(x2-x1), height H`=H0+(y2-y1), as shown in Figure 7B; if x6-x5<0, y6-y5≥0, the zoomed image moves to the lower left of the display screen, and the starting point of the moved zoomed image is Coordinates are (0, y2-y1), width W`=W0+(x2-x1), height H`=H0-(y2-y1), as shown in Figure 7C; if x6-x5<0, y6-y5< 0, the zoomed image moves to the upper right of the display screen, the starting coordinates of the moved zoomed image are (0, 0), width W`=W0+(x2-x1), height H`=H0+(y2- y1), as shown in Figure 7D.

Image sharpening is to compensate the outline of the image, enhance the edge of the image and the part of the grayscale jump, and make the image clear. Aiming at the problem that the zoomed image is blurred, sharpening processing may be used in the present invention to clear the zoomed image, as shown in FIG. 8 . Sharpening can be achieved by gradient sharpening, Roberts, Prewitt, Sobel, and Laplacian algorithms; on the premise of ensuring realistic quality, the sharpening for performance display devices can use linear interpolation to copy the pixels of the zoomed image and Adjust the pixel value, and use the high-pass filter to filter the blurred color of the image to realize the clarity of the image.

Fig. 9 is a schematic structural diagram of an image zooming device in the present invention. As shown in Fig. 9, the device for realizing image zooming includes: a storage unit, an input detection unit, a rule determination unit and a parameter determination unit, wherein the storage unit is used to store preset The corresponding relationship between the user input information and the scaling rules; the input detection unit is used to obtain the user input information and provide it to the rule determination unit; the rule determination unit is used to correspond between the user input information stored in the storage unit and the scaling rules relationship, determine the scaling rule corresponding to the user input information, and provide it to the parameter determining unit; the parameter determining unit is used to determine the target area according to the scaling rule, and determine the display ratio of the target area image according to the scaling rule. The parameter determination unit is further configured to determine the starting coordinates of the scaled image according to the scaling rule.

The device for realizing image scaling further includes: a scaling processing unit, which is used to perform scaling processing on the target area image according to the display ratio; It is used to locate the zoomed image at the determined starting coordinates.

On the basis that the device for realizing image zooming includes a zooming processing unit, the device further includes: an effective judging unit, configured to notify the zooming processing unit to restore the display size of the image when determining that the user operation is valid; The image is scaled.

On the basis that the device for realizing image zooming includes a zooming processing unit, the device further includes: an operation capturing unit and a filtering processing unit, and the storage unit is further used to store a preset correspondence between user operations and filtering rules; the operation capturing unit It is used to capture user operations and provide them to the filter processing unit; the filter processing unit is used to determine the filter rules corresponding to the user operations according to the corresponding relationship between the set user operations and filter rules, and determine the origin of the image according to the filter rules The starting coordinate, according to which the zoomed image is moved.

On the basis that the device for realizing image zooming includes a zooming processing unit, the device further includes: a sharpening processing unit, which performs sharpening processing on the zoomed image.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention.

Claims (17)

1, a kind of processing method in realizing image scaling, is characterized in that, this method comprises: Obtain user input information; Determine a scaling rule corresponding to the user input information according to the set correspondence between the user input information and the scaling rule; The target area is determined according to the scaling rule, and the display ratio of the target area image is determined according to the scaling rule. 2. The method according to claim 1, further comprising: determining the starting coordinates of the zoomed image according to the scaling rule after the determining the target area and the display ratio. 3. The method according to claim 1, characterized in that the initial coordinates of the original image are set as (0, 0), the width is W0, the height is H0, The obtaining of user input information includes: obtaining two coordinate positions input by the user through the mouse, the coordinates input by the user through the mouse for the first time are (x1, y1), and the coordinates input by the user through the mouse for the second time are (x2, y2) ; The determining the scaling rule corresponding to the user input information according to the corresponding relationship between the set user input information and the scaling rule, determining the target area and the display ratio of the target area image according to the scaling rule include: Determine the starting coordinates of the target area as (x1, y1), width W1=|x2-x1|, height H1=|y2-y1|, determine whether x1 is smaller than x2, If x1 is less than x2, enlarge the image of the target area to determine whether W0/W1 is not less than H0/H1, if W0/W1 is not less than H0/H1, determine the display ratio of the target area image as R=H0/H1; if W0/W1 W1 is less than H0/H1, and the display ratio of the target area image is determined to be R=W0/W1; If x1 is not less than x2, shrink the image of the target area to determine whether W0/W1 is not less than H0/H1, and if W0/W1 is not less than H0/H1, determine that the display ratio of the image of the target area is R=H0/H1; if W0 /W1 is smaller than H0/H1, and the display ratio of the target area image is determined to be R=W0/W1. 4. The method of claim 3, wherein: After the determination of the display ratio of the image of the target area is R=H0/H1, it further includes: determining that the starting coordinates of the enlarged image are (x, 0), the width is W1*R, and the height is H0; After the determination of the display ratio of the image of the target area is R=W0/W1, it further includes: determining that the starting coordinates of the enlarged image are (0, y), the width is W0, and the height is H1*R; After determining the display ratio of the target area image as R=H0/H1, it further includes: determining the starting coordinates of the reduced image as (x, y), the width as W1/R, and the height as H1/R; After determining the display ratio of the target area image as R=W0/W1, the method further includes: determining the starting coordinates of the reduced image as (x, y), the width as W1/R, and the height as H1/R. 5. The method according to claim 2 or 4, characterized in that after determining the display ratio of the target area image, further comprising: performing scaling processing on the target area image according to the display ratio, and positioning the zoomed image at the determined starting coordinates. 6 . The method according to claim 5 , further comprising: after determining that the user operation satisfies a valid condition, restoring the display size of the target area image after the scaling process of the target area image. 7. The method according to claim 6, wherein said restoring the display size of the target area image when determining that the user operation satisfies the valid condition comprises: Obtain the operation of the user double-clicking the mouse. The coordinates of the user's first double-clicking of the mouse are (x3, y3) and the time is t1, and the coordinates of the second double-clicking of the mouse are (x4, y4) and the time is t2; Judging whether |x4-x3| is less than the set displacement threshold, and whether t2-t1 is less than the set time threshold, if both are satisfied, then determine that the user operation is valid and restore the display size of the image in the target area; otherwise, determine that the user operation is invalid , does not restore the display size of the image. 8. The method according to claim 5, further comprising: A. Capture user operations, determine the corresponding filtering rules according to the corresponding relationship between user operations and filtering rules set; determine the starting coordinates of the image according to the filtering rules, and move the zoomed image according to the starting coordinates. 9. The method according to claim 8, wherein the initial coordinates of the original image are set as (0, 0), the width is W0, and the height is H0, and the step A includes: Capture the coordinates (x5, y5) entered by the user through the mouse, and capture the coordinates (x6, y6) entered by the user through the mouse; If x6-x5≥0, y6-y5≥0, the zoomed image moves to the bottom right of the display screen, the starting coordinates of the moved zoomed image are (x2-x1, y2-y1), and the width is W0- (x2-x1), the height is H0-(y2-y 1); If x6-x5≥0, y6-y5<0, the zoomed image moves to the upper right of the display screen, the starting coordinates of the moved zoomed image are (x2-x1, 0), and the width is W0-(x2 -x1), the height is H0+(y2-y1); If x6-x5<0, y6-y5≥0, the zoomed image moves to the lower left of the display screen, and the starting coordinates of the moved zoomed image are (0, y2-y1), and the width is W0+(x2- x1), the height is H0-(y2-y1); If x6-x5<0, y6-y5<0, the zoomed image moves to the upper right of the display screen, the starting coordinates of the moved zoomed image are (0, 0), and the width is W0+(x2-x1) , the height is H0+(y2-y1). 10 . The method according to claim 5 , further comprising: performing sharpening processing on the zoomed image after said scaling the image of the target area. 11. The method according to claim 10, wherein said sharpening the zoomed image comprises: using linear interpolation to copy pixels of the zoomed image and adjusting pixel values, and using a high-pass filter to The image is blurred by color filtering. 12. A processing device for realizing image scaling, characterized in that the device includes: a storage unit, an input detection unit, a rule determination unit, and a parameter determination unit, wherein, The storage unit is used to store preset correspondence between user input information and scaling rules; The input detection unit is used to obtain user input information; The rule determining unit is configured to determine a scaling rule corresponding to the user input information according to a correspondence between the user input information and scaling rules; The parameter determination unit is used to determine the target area according to the scaling rule, and determine the display ratio of the target area image according to the scaling rule. 13. The device according to claim 12, wherein the parameter determination unit is further configured to: determine the starting coordinates of the scaled image according to a scaling rule. 14. The device according to claim 13, characterized in that the device further comprises: a scaling processing unit, configured to perform scaling processing on the target area image according to the display ratio, and position the scaled image at the determined starting coordinate . 15. The device of claim 14, wherein: The device further includes: a valid judgment unit, configured to notify the scaling processing unit to restore the display size of the image when it is determined that the user operation is valid; The scaling processing unit is configured to stop performing scaling processing on the image of the target area. 16. The device according to claim 14 or 15, characterized in that the device further comprises: an operation capture unit and a filter processing unit, The storage unit is further used to store a preset correspondence between user operations and filtering rules; The operation capture unit is used to capture user operations; The filtering processing unit is configured to determine a filtering rule corresponding to the user operation according to the corresponding relationship between the user operation and the filtering rule, determine the starting coordinates of the image according to the filtering rule, and move the image according to the starting coordinates. Zoomed image. 17. The device according to claim 14 or 15, characterized in that the device further comprises: a sharpening processing unit, which performs sharpening processing on the zoomed image.

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