Image compression method and device

Abstract

The invention discloses a method for compressing large-size image. The method comprises the following steps: dividing an image into multiple sub-regions with the same size, computing multiple countingvalues for reflecting pixel distribution condition in each sub-region, and selecting the corresponding compression and shrinking method according to the counting value distribution of the whole imageto produce a compressed image convenient for mobile phone processing and watching. The invention further discloses a device corresponding to the method. Through the method disclosed by the embodimentof the invention, the image beautifying processing efficiency on the mobile phone can be improved and the use of the storage space is reduced in the premise of preventing the user from perceiving theimage quality defect.

Description

technical field

[0001] The present disclosure relates to the field of image processing technologies, and more particularly, to a method and device for compressing images. Background technique

[0002] During image processing and storage, it is often necessary to compress the size of the image in order to save processing resources and storage space. For example, a picture taken by a camera may have too many pixels, and if it is not affected visually when it is reduced in actual use, the picture can be reduced to a quarter of its original size, and then the picture compression technology can be used to reduce the pixel size. The image size is further reduced, which cuts both processing time and storage space by about a quarter. In the application scenario of processing images in large batches, similar operations are very frequent and necessary. Users often need to upload a large number of high-resolution pictures taken by the camera to the mobile phone, and perform image bea...

Examples

Embodiment Construction

[0018] It will be understood by those skilled in the art that although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of the present invention. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0019] figure 1 A block diagram of the compressed image device 100 is illustrated in . The device 100 may preferably be a mobile device such as a tablet or a smart phone. The device 100 includes a processor 101 , a memory 102 and a display 103 . The processor 101 may be any general-purpose or special-purpose processing device for executing instructions, such as a CISC or RISC instruction set processor, an x86...

technical field

[0001] The present disclosure relates to the field of image processing technologies, and more particularly, to a method and device for compressing images. Background technique

[0002] During image processing and storage, it is often necessary to compress the size of the image in order to save processing resources and storage space. For example, a picture taken by a camera may have too many pixels, and if it is not affected visually when it is reduced in actual use, the picture can be reduced to a quarter of its original size, and then the picture compression technology can be used to reduce the pixel size. The image size is further reduced, which cuts both processing time and storage space by about a quarter. In the application scenario of processing images in large batches, similar operations are very frequent and necessary. Users often need to upload a large number of high-resolution pictures taken by the camera to the mobile phone, and perform image bea...

Examples

Embodiment Construction

[0018] It will be understood by those skilled in the art that although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of the present invention. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0019] figure 1 A block diagram of the compressed image device 100 is illustrated in . The device 100 may preferably be a mobile device such as a tablet or a smart phone. The device 100 includes a processor 101 , a memory 102 and a display 103 . The processor 101 may be any general-purpose or special-purpose processing device for executing instructions, such as a CISC or RISC instruction set processor, an x86...

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