Mobile Image Differential Compression for Definition Retention
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Solution Overview
Problem
Conventional image sharing methods on mobile devices result in poor user experience due to low picture definition caused by server-side compression, which reduces image quality and increases storage space occupation.
Innovation Solution
Implementing a differential compression method on mobile devices that allows users to select and compress target objects in images using varying compression ratios, reducing definition attenuation while maintaining a smaller image size, thereby avoiding further compression by the social platform.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the server compresses the picture to save memory, then the storage space is reduced, but the picture definition becomes low and user experience deteriorates
Solution Approach 1:
The patent applies local quality by performing differential compression on different regions of the image. The target object region is compressed with a first compression ratio that preserves higher definition, while the background region is compressed with a second compression ratio that achieves greater compression. This allows the image to have both reduced storage space and maintained picture definition in important areas.
2Quantity of substance
If uniform compression is applied to the entire image, then the storage space is reduced, but the definition of important objects is attenuated
Solution Approach 1:
The patent divides the image into a target object region and a background region, applying different compression ratios to each. The target object region uses a lower compression ratio to preserve definition, while the background region uses a higher compression ratio to reduce size. This resolves the contradiction by making compression quality location-dependent rather than uniform.
3Quantity of substance
If the social platform compresses the uploaded image, then the storage space is optimized, but the image quality is further reduced
Solution Approach 1:
The patent performs compression preprocessing on the mobile device before uploading the image to the social platform. By compressing the image in advance with differential compression, the image is already optimized for storage while preserving important details. This preliminary action prevents the social platform from performing additional compression that would further degrade image quality.
4Quantity of substance
If high compression ratio is used to reduce image size, then the storage space is saved, but the picture definition becomes poor
Solution Approach 1:
The patent applies different compression ratios to different regions: a lower compression ratio for the target object region to maintain definition, and a higher compression ratio for the background region to reduce size. This spatial variation in compression quality allows the image to achieve small overall size while preserving definition where it matters most.
Data Source
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AI summary
An image sharing method and a mobile device are provided. The method includes: starting, by an electronic device, a social application to enter an interface for inputting to-be-posted content; when an operation for adding an image is detected, displaying a first image in the interface; and when an operation for posting the first image is detected, in response to the operation, performing differential compression on the first image to obtain a second image, and sending the second image to a server corresponding to the social application. The second image includes a first area and a second area. The first area is an area obtained by compressing a third area on the first image in a first compression ratio. The third area is an area in which the at least one target object is located on the first image. The second area is an area obtained by compressing a fourth area on the first image in a second compression ratio. The fourth area is an area other than the third area on the first image. The first compression ratio is less than the second compression ratio. It can be learned that the electronic device may perform the differential compression on the image, and post the compressed image in the social platform.