A method for automatically selecting image compression quality and compressing images

A technology of compression quality and automatic selection, applied in the electronic field, can solve problems such as inability to realize personalized settings, and achieve the effect of reducing manual participation, reducing size, and reducing storage space
CN105513100BInactive Publication Date: 2018-07-17GUANGZHOU IKE IMAGE TECH CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
GUANGZHOU IKE IMAGE TECH CO LTD
Publication Date
2018-07-17
Estimated Expiration
Not applicable Β· inactive patent
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Abstract

The invention relates to the technical field of electronics and more particularly relates to a method for automatically selecting the image compression quality and compressing an image. The method is characterized by comprising the following steps of A, establishing an image feature database for storing image features, wherein each image feature corresponds to a corresponding compression quality; B, preparing a pre-compressed image: preparing one or more pre-compressed images, extracting and analyzing the image feature of each pre-compressed image; C, searching the compression quality: comparing the image feature of each pre-compressed image with image features stored in the database, and respectively searching an image feature that is closest to the image feature of each pre-compressed image in the database; D, compressing images: according to searched image features, compressing each pre-compressed image according to the corresponding compression quality, and storing the compressed image. According to the technical scheme of the invention, the method can automatically select the compression quality, so that the manual participation is reduced. Meanwhile, the requirement on the specialized knowledge and the experience of a user is reduced.
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Description

Technical field

[0001] The present invention relates to the field of electronic technology, and more specifically to a method for automatically selecting picture compression quality and compressing pictures. Background technique

[0002] The compression mentioned here does not change the size of the picture and the number of pixels, but only changes the size of the picture file by adjusting the compression quality. Compression ratio = (file size of the original image / file size of the compressed image), the compression quality ranges from 0---100. The compression here usually refers to the compression of jpeg pictures, and can also be applied to pictures in other formats with the same principle as jpeg. For a general picture original image (source mobile phone camera, digital camera) compression quality is 99, compression quality 97 is 1 / 2 of the original image file size, compression quality 94 can be 1 / 3 of the original image file size, compression quality 91 is 1 / 4 of the orig...

Claims

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