CN103366341A - Method and device for adaptive-resolution display of image - Google Patents

Abstract

The present invention discloses a method and device for image adaptive resolution display. The method includes: selecting a target image, and the target image includes an image whose file size reaches a preset threshold in a current application-specific resource package; The current application obtains a first image set from its own resource package; generates a second image set according to the first image set; and selects an image with the largest file size in the second image set for display. The method can automatically and conveniently and quickly select a picture suitable for the current screen resolution from resource packs of multiple resolutions, and has simple implementation and strong versatility.

Description

Method and device for image adaptive resolution display

technical field

The invention relates to the application technology of mobile communication equipment, in particular to a method and device for displaying images with self-adaptive resolution. the

Background technique

With the development of mobile Internet technology, the application of mobile terminals and other handheld devices is becoming more and more common. At present, there are more and more types of mobile terminal resolutions, and each mobile terminal has its own resolution. For a single application, in order to be compatible with the needs of different screen resolutions on different platforms during program development, the resource package usually includes It will include several mainstream resolutions, such as VGA (640*480)/HVGA (320*480)/WVGA (800*480)/720P (1280*720). When the application is started, the system selects an image of the corresponding resolution from the resource pack according to the screen resolution of the mobile terminal for display. When the screen resolution of the mobile terminal is not the above-mentioned mainstream resolution, for example, when the resolution is 540*960/800*600, the application program does not have a corresponding resource package. In order to adapt to the non-mainstream resolution, the mobile terminal can only use the Randomly find a resource pack in the resource pack or choose a resource pack with a small difference from its screen resolution, upscale or compress the pictures in it, and display it in the form of a non-mainstream resolution. This mechanism will cause poor visual effects due to upscaling or compression problems, and when the device resolution is just in the middle of the two mainstream resolutions, or some pictures are only suitable for compression and not suitable for upscaling due to the image cutting method, they cannot A picture that fits the current screen resolution is picked out, and the picture is displayed poorly. the

Contents of the invention

In view of this, the technical problem to be solved by the present invention is to propose a method and device for image adaptive resolution display, which can conveniently and quickly automatically select the image suitable for the current screen resolution from resource packs with multiple resolutions. rate pictures. the

For reaching this purpose, the present invention adopts following technical scheme:

A method for image adaptive resolution display, the method comprising:

Selecting a target image, where the target image includes an image whose file size reaches a preset threshold in the current application-specific resource pack;

Obtain the first image collection from the resource package that comes with the current application;

generating a second set of images based on the first set of images;

Selecting the image with the largest file size in the second image collection for display;

Wherein, the first image collection refers to the collection of images with the same name as the target image at all resolutions in the resource package of the current application, and the second image collection refers to the processed images in the first image collection. A collection of images in the same file format with the same target resolution as the mobile terminal. the

Further, the current application resource package includes any one of ldpi, mdpi, hdpi, xhdpi or a combination thereof. the

Further, the acquisition of the target image includes,

select a specific resource bundle;

determining images whose file size reaches a preset threshold from said specific resource bundle;

Wherein, the specific resource package is any one of the current application's own resource packages. the

Further, said generating the second image set includes,

Read the size information of the images in the first image collection;

Calculate the size information of the image at the target resolution of the mobile terminal according to the following formula (1);

$\left\{\begin{array}{c}{\mathrm{<span\; class="notranslate">\; w</span>}}^{<span\; class="notranslate">\; ,</span>}<span\; class="notranslate">\; =</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; w</span>}<span\; class="notranslate">\; *</span>\mathrm{<span\; class="notranslate">\; Y</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; /</span>\mathrm{<span\; class="notranslate">\; K</span>}\\ {\mathrm{<span\; class="notranslate">\; h</span>}}^{<span\; class="notranslate">\; ,</span>}<span\; class="notranslate">\; =</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; h</span>}<span\; class="notranslate">\; *</span>\mathrm{<span\; class="notranslate">\; Y</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; /</span>\mathrm{<span\; class="notranslate">\; K</span>}\end{array}\right.<span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; )</span>$

Stretching or compressing the image according to the size information of the image at the target resolution of the mobile terminal;

Store the processed image;

Among them, w' represents the width of the image in the first image set at the target resolution of the mobile terminal, h' represents the height of the image in the first image set at the target resolution of the mobile terminal, and w' represents the image in the first image set at the original The width at the resolution, h represents the height of the image in the first image collection at the original resolution, Y represents the PPI of the mobile terminal, and K represents the number of independent pixels of the device corresponding to the screen density of the image in the first image collection. the

Further, the file format of the images in the second image collection includes JPG format. the

Correspondingly, the present invention also discloses an image adaptive resolution display device, the device includes:

The selection module is used to select a target image, and the target image includes an image whose file size reaches a preset threshold in the current application-specific resource pack;

An acquisition module, configured to acquire the first image set from the resource package that comes with the current application;

A processing module, configured to generate a second image set according to the first image set;

A selection module, configured to select the image with the largest file size in the second image collection;

A display module, configured to display the image with the largest file size in the second image collection;

Wherein, the first image collection refers to the collection of images with the same name as the target image at all resolutions in the resource package of the current application, and the second image collection refers to the processed images in the first image collection. A collection of images in the same file format with the same target resolution as the mobile terminal. the

Further, the current application resource package includes any one of ldpi, mdpi, hdpi, xhdpi or a combination thereof. the

Further, the acquisition module includes,

Selection unit, used to select a specific resource bundle;

a determination unit, configured to determine images whose file size reaches a preset threshold from the specific resource bundle;

Wherein, the specific resource package is any one of the current application's own resource packages. the

Further, the processing module includes,

A reading unit, configured to read the size information of the images in the first image set;

A calculation unit, configured to calculate the size information of the image at the target resolution of the mobile terminal;

An adjustment unit, configured to expand or compress the image according to the size information of the image at the target resolution of the mobile terminal;

The storage unit is used for storing the processed image. the

Further, the file format of the images in the second image collection includes JPG format. the

The method and device for image self-adaptive resolution display provided by the present invention can conveniently and quickly automatically select a picture suitable for the current screen resolution from resource packs of multiple resolutions, which is simple to implement and highly versatile. the

Description of drawings

Fig. 1 is a flow chart of a method for image adaptive resolution display provided by Embodiment 1 of the present invention;

Fig. 2 is the flow chart that generates the second image collection in the method shown in embodiment one of the present invention;

FIG. 3 is a structural block diagram of an apparatus for image adaptive resolution display provided by Embodiment 2 of the present invention. the

Detailed ways

The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods. The specific embodiments described here are only used to explain the present invention, but not to limit the present invention. the

According to the selected target image, the present invention parses out the images corresponding to all resolutions of the application's self-contained resource package, compresses or upscales the image according to the target resolution of the mobile terminal, and then uses the same file format Among the saved processed images, the image with the largest file size is selected for display, so that the displayed image is suitable for the resolution of the current mobile terminal. the

FIG. 1 is a flowchart of a method for displaying images with adaptive resolution according to Embodiment 1 of the present invention. This embodiment takes the Android system as an example for description. As shown in Figure 1, the specific process includes:

Step 101: Select a target image, where the target image includes an image whose file size reaches a preset threshold in the current application-specific resource package. the

In order to be compatible with different screens on different platforms when developing an application, the application will come with a corresponding resource package. The resource package includes any one of ldpi, mdpi, hdpi, xhdpi or a combination thereof. Multiple resource packs are to support multiple resolutions to suit the needs of different screens. Wherein, each resource package may contain sample images of multiple resolutions. The application can provide different custom screen layout-platforms according to different screen sizes, and the corresponding layout will be selected for rendering according to the actual size of the screen. When the application runs on a certain platform, the system will parse the corresponding picture from its own resource package according to the screen resolution of the mobile terminal and display it. the

Density in Android is divided into four types, namely 120dpi, 160dpi, 240dpi, 320dpi, and the folders in the corresponding project are drawable-ldpi, drawable-mdpi, drawable-hdpi, drawable-xhdpi. Density is the number of pixels that can be displayed within the specified physical width and height of the screen according to the pixel resolution. In the same width and height area, a low-density screen can display fewer pixels, while a high-density screen can display more pixels. The size ratio of the same picture in these folders is 3:4:6:8. Different devices have different display effects. Density is related to device hardware and does not depend on pixels. When the Android system runs the application, it will obtain the pictures in the corresponding folder according to the Density of the current device to display. the

In this embodiment, when the application program is started, the system first checks the resource packages under the resource directory of the program, selects any resource package, and determines an image whose file size reaches a preset threshold from the resource package as the target image , and record the name of the target image. Wherein, the preset threshold can be set according to actual conditions. the

What needs to be explained here is that the determination of the target image is for subsequent selection of an image with the same name from multiple resource packages as a reference sample. Images of the same content in different resource packages are processed, and images suitable for the resolution of the mobile terminal are determined by analyzing the processed images. If the images selected from different resource packs are different, the processed results are not informative. the

Preferably, the image with the largest file size is determined from the selected resource pack as the target image. The larger the file size, the more information the image carries. the

Step 102: Obtain a first image set from the resource package of the current application. the

The first image set refers to a set of images with the same name as the target image at all resolutions in the resource package of the current application. the

Step 103: Generate a second image set according to the first image set. the

The second image set refers to a set of images in the same file format that are generated by processing the images in the first image set and have the same target resolution as the mobile terminal. the

FIG. 2 is a flow chart of generating a second image set in the method shown in Embodiment 1 of the present invention. The file format of the images in the second image set includes JPG format. the

The specific process includes,

Step 1021: Read the size information of the images in the first image collection;

The size information of the images in the first image set includes the width and height of the images at the original resolution, namely w and h. the

Step 1022: Calculate the size information of the image at the target resolution of the mobile terminal according to the following formula (1);

$\left\{\begin{array}{c}{\mathrm{<span\; class="notranslate">\; w</span>}}^{<span\; class="notranslate">\; ,</span>}<span\; class="notranslate">\; =</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; w</span>}<span\; class="notranslate">\; *</span>\mathrm{<span\; class="notranslate">\; Y</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; /</span>\mathrm{<span\; class="notranslate">\; K</span>}\\ {\mathrm{<span\; class="notranslate">\; h</span>}}^{<span\; class="notranslate">\; ,</span>}<span\; class="notranslate">\; =</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; h</span>}<span\; class="notranslate">\; *</span>\mathrm{<span\; class="notranslate">\; Y</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; /</span>\mathrm{<span\; class="notranslate">\; K</span>}\end{array}\right.<span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; )</span>$

Among them, w' represents the width of the image in the first image set at the target resolution of the mobile terminal, h' represents the height of the image in the first image set at the target resolution of the mobile terminal, and w represents the original resolution of the image in the first image set h represents the height at the original resolution of the image in the first image collection, Y represents the PPI of the mobile terminal, and K represents the number of independent pixels of the device corresponding to the screen density of the image in the first image collection. the

It should be noted here that both the width and height at the target resolution of the mobile terminal and the width and height at the original resolution of the images in the first image set are in terms of pixels and have nothing to do with the physical size of the images. the

Specifically, if the resource packs of the current application include four types: ldpi, mdpi, hdpi, and xhdpi, when the mobile terminal calls the picture in which resource pack to display, it will use the independent device pixels related to the screen density to display, and the independent device pixels Not dependent on pixels. In general, for ordinary screens, ldpi refers to 120, mdpi refers to 160, hdpi refers to 240, xhdpi refers to 320, and dpi refers to pixels/inch. If the screen size of a mobile terminal is 4 inches and the resolution is 854×480, then the PPI of the mobile terminal is equal to the square sum of the square of the number of width pixels (854) plus the square sum of the number of height pixels (480) divided by the screen size (4), the result is about 245. There is no fully matching resource package in the resource package that comes with the current application, so the image cannot be obtained from the package and used directly, and the image needs to be properly upscaled or compressed. the

In this embodiment, there are four types of device independent pixels corresponding to the screen density of the images in the first image set. If the images in the first image set currently obtained are images in the ldpi resource package, then according to the formula (1) Calculating the size information of the image at the target resolution of the mobile terminal becomes:

$\left\{\begin{array}{c}{\mathrm{<span\; class="notranslate">\; w</span>}}^{<span\; class="notranslate">\; ,</span>}<span\; class="notranslate">\; =</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; w</span>}<span\; class="notranslate">\; *</span>\mathrm{<span\; class="notranslate">\; 245</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; /</span>\mathrm{<span\; class="notranslate">\; 120</span>}\\ {\mathrm{<span\; class="notranslate">\; h</span>}}^{<span\; class="notranslate">\; ,</span>}<span\; class="notranslate">\; =</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; h</span>}<span\; class="notranslate">\; *</span>\mathrm{<span\; class="notranslate">\; 245</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; /</span>\mathrm{<span\; class="notranslate">\; 120</span>}\end{array}\right.$

According to the original size of the image in the ldpi resource package in the first image set, the size information of the image at the target resolution of the mobile terminal can be obtained. the

For the images in the first image set are the images in the mdpi resource pack, the size information of the images at the target resolution of the mobile terminal is calculated according to the formula (1):

$\left\{\begin{array}{c}{\mathrm{<span\; class="notranslate">\; w</span>}}^{<span\; class="notranslate">\; ,</span>}<span\; class="notranslate">\; =</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; w</span>}<span\; class="notranslate">\; *</span>\mathrm{<span\; class="notranslate">\; 245</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; /</span>\mathrm{<span\; class="notranslate">\; 160</span>}\\ {\mathrm{<span\; class="notranslate">\; w</span>}}^{<span\; class="notranslate">\; ,</span>}<span\; class="notranslate">\; =</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; h</span>}<span\; class="notranslate">\; *</span>\mathrm{<span\; class="notranslate">\; 245</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; /</span>\mathrm{<span\; class="notranslate">\; 160</span>}\end{array}\right.$

According to the original size of the image in the mdpi resource package in the first image set, the size information of the image at the target resolution of the mobile terminal can be obtained. the

For the images in the first image set are images in the hdpi resource pack, the size information of the images at the target resolution of the mobile terminal is calculated according to formula (1):

$\left\{\begin{array}{c}{\mathrm{<span\; class="notranslate">\; w</span>}}^{<span\; class="notranslate">\; ,</span>}<span\; class="notranslate">\; =</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; w</span>}<span\; class="notranslate">\; *</span>\mathrm{<span\; class="notranslate">\; 245</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; /</span>\mathrm{<span\; class="notranslate">\; 240</span>}\\ {\mathrm{<span\; class="notranslate">\; h</span>}}^{<span\; class="notranslate">\; ,</span>}<span\; class="notranslate">\; =</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; h</span>}<span\; class="notranslate">\; *</span>\mathrm{<span\; class="notranslate">\; 245</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; /</span>\mathrm{<span\; class="notranslate">\; 240</span>}\end{array}\right.$

According to the original size of the image in the hdpi resource package in the first image set, the size information of the image at the target resolution of the mobile terminal can be obtained. the

For the images in the first image collection are images in the xhdpi resource pack, then the size information of the images at the target resolution of the mobile terminal is calculated according to the formula (1):

$\left\{\begin{array}{c}{\mathrm{<span\; class="notranslate">\; w</span>}}^{<span\; class="notranslate">\; ,</span>}<span\; class="notranslate">\; =</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; w</span>}<span\; class="notranslate">\; *</span>\mathrm{<span\; class="notranslate">\; 245</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; /</span>\mathrm{<span\; class="notranslate">\; 240</span>}\\ {\mathrm{<span\; class="notranslate">\; w</span>}}^{<span\; class="notranslate">\; ,</span>}<span\; class="notranslate">\; =</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; h</span>}<span\; class="notranslate">\; *</span>\mathrm{<span\; class="notranslate">\; 245</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; /</span>\mathrm{<span\; class="notranslate">\; 240</span>}\end{array}\right.$

According to the original size of the image in the xhdpi resource package in the first image set, the size information of the image at the target resolution of the mobile terminal can be obtained. the

It should be noted that, here only a specific embodiment is used for illustration. The calculation of the size information of each image in the first image set at the target resolution is mainly related to the PPI of the mobile terminal and the resource package currently used. Of course, this embodiment does not specifically limit the types of resource packs, and may also include resource packs that come with a higher version of Android. Among them, xhdpi is a category that has only been added since Android2.2, and the category xlarge has been added since Android2.3. the

Step 1023: stretch or compress the image according to the size information of the image at the target resolution of the mobile terminal;

In this step, use the Bitmap class to load the image, and call the createScaledBitmap method of the Bitmap class to scale or compress the image data according to the target resolution. Those skilled in the art can easily know that image upscaling or compression is a commonly used image processing technology, therefore, there is no strict limitation on the method of image upscaling or compression processing. the

Step 1024: store the processed image;

Call the compress method of the Bitmap class to save it as a JPG format file

Step 104: Select and display the image with the largest file size in the second image collection. the

Object files with the same name have the same content, and after being stretched or compressed, multiple files with the same content, the same file format, and different sizes are generated. Multiple files can be compared for reference. For JPG files, the more blurred the information, the smaller the corresponding file; the clearer the more information, the larger the corresponding file. Therefore, in the step, the picture with the largest file size is selected as the picture displayed at the target resolution of the mobile terminal. the

The image adaptive resolution display method provided in this embodiment can conveniently and quickly automatically select a picture suitable for the current screen resolution from resource packs of multiple resolutions, which is simple to implement and highly versatile. the

FIG. 3 is a structural block diagram of an apparatus for image adaptive resolution display provided by Embodiment 2 of the present invention. As shown in Figure 3, the device includes,

The selection module 30 is used to select a target image, and the target image includes an image whose file size reaches a preset threshold in the current application-specific resource package;

An acquisition module 31, configured to acquire a first set of images from the resource package that comes with the current application;

A processing module 32, configured to generate a second image set according to the first image set;

Selection module 33, for selecting the image with the largest file size in the second image collection;

A display module 34, configured to display the image with the largest file size in the second image collection;

Wherein, the first image collection refers to the collection of images with the same name as the target image at all resolutions in the resource package of the current application, and the second image collection refers to the processed images in the first image collection. A collection of images in the same file format with the same target resolution as the mobile terminal. the

Wherein, the selected module 30 includes,

Selection unit 301, used to select a specific resource package;

The determining unit 302 is configured to determine an image whose file size reaches a preset threshold from the specific resource package; wherein the specific resource package is any one of the resource packages that come with the current application. the

The processing module 32 includes,

A reading unit 321, configured to read the size information of the images in the first image set;

A calculation unit 322, configured to calculate the size information of the image at the target resolution of the mobile terminal;

An adjustment unit 323, configured to expand or compress the image according to the size information of the image at the target resolution of the mobile terminal;

The storage unit 324 is configured to store the processed image. the

The device for image adaptive resolution display provided in this embodiment can conveniently and quickly automatically select a picture suitable for the current screen resolution from resource packages of multiple resolutions. the

All or part of the technical solutions provided by the above embodiments can be realized by software programming, and the software program is stored in a readable storage medium, such as a hard disk, an optical disk or a floppy disk in a computer. the

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within range. the

Claims (10)

1. the method that image adaptive resolution shows is characterized in that, the method comprises:

Selected target image, described target image comprise that current application specific resources bag File size reaches the image of predetermined threshold value;

Carry from described current application and to obtain the first image collection the resource bag;

Generate the second image collection according to described the first image collection;

The maximum image of selected described the second image collection File size shows;

Wherein, described the first image collection refers to that current application carries the set of the image identical with described target image title under all resolution in the resource bag, and described the second image collection refers to the set of the image of the identical file form identical with the portable terminal target resolution of the treated generation of image in the first image collection.

2. the method that shows of image adaptive resolution according to claim 1 is characterized in that, described current application resource bag comprises any one or its combination among ldpi, mdpi, hdpi, the xhdpi.

3. the method that shows of image adaptive resolution according to claim 2 is characterized in that, the described target image that obtains comprises,

Select the specific resources bag;

Determine that from described specific resources bag file size reaches the image of predetermined threshold value;

Wherein, described specific resources bag is that current application carries in the resource bag any one.

4. the method that shows of image adaptive resolution according to claim 1 is characterized in that, described generation the second image collection comprises,

Read the dimension information of image in described the first image collection;

Calculate the dimension information of described image under the portable terminal target resolution according to following formula (1);

$\left\{\begin{array}{c}{w}^{,}=(w*Y)/K\\ h^{,}=(h*Y)/K\end{array}\right.---\left(1\right)$

Described image is drawn high according to the dimension information of described image under the portable terminal target resolution or compress;

Image after the stores processor;

Wherein, the width of image under the portable terminal target resolution in w ' expression the first image collection, the height of image under the portable terminal target resolution in h ' expression the first image collection, w represents the width of image under original resolution in the first image collection, h represents the height of image under original resolution in the first image collection, Y represents the PPI of portable terminal, and K represents the equipment independent image prime number of the screen density that this image is corresponding in the first image collection.

5. the method for image adaptive resolution demonstration according to claim 1 is characterized in that, the file layout of image comprises the JPG form in described the second image collection.

6. the device that image adaptive resolution shows is characterized in that, described device comprises:

Chosen module is used for the selected target image, and described target image comprises that current application specific resources bag File size reaches the image of predetermined threshold value;

Acquisition module is used for carrying the resource bag from described current application and obtains the first image collection;

Processing module is used for generating the second image collection according to described the first image collection;

Select module, be used for the maximum image of selected described the second image collection File size;

Display module is used for showing the maximum image of described the second image collection File size;

Wherein, described the first image collection refers to that current application carries the set of the image identical with described target image title under all resolution in the resource bag, and described the second image collection refers to the set of the image of the identical file form identical with the portable terminal target resolution of the treated generation of image in the first image collection.

7. the device that shows of image adaptive resolution according to claim 6 is characterized in that, described current application resource bag comprises any one or its combination among ldpi, mdpi, hdpi, the xhdpi.

8. the device that shows of image adaptive resolution according to claim 7 is characterized in that, described acquisition module comprises,

Selected cell is used for selecting the specific resources bag;

Determining unit is used for determining that from described specific resources bag file size reaches the image of predetermined threshold value;

Wherein, described specific resources bag is that current application carries in the resource bag any one.

9. the device that shows of image adaptive resolution according to claim 6 is characterized in that, described processing module comprises,

Reading unit is for the dimension information that reads described the first image collection image;

Computing unit is used for calculating the dimension information of described image under the portable terminal target resolution;

Adjustment unit is used for described image according to the dimension information of described image under the portable terminal target resolution being drawn high or compressing;

Storage unit is for the image after the stores processor.

10. the device of described image adaptive resolution demonstration according to claim 6 is characterized in that, the file layout of image comprises the JPG form in described the second image collection.

Images