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Image coding method and device

An image coding and image frame technology, applied in the field of image processing, can solve the problems of increasing image coding time, computational complexity, coding redundancy, etc., and achieve the effect of reducing coding complexity

Active Publication Date: 2020-07-31
XIAN WANXIANG ELECTRONICS TECH CO LTD
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Problems solved by technology

[0003] Embodiments of the present disclosure provide an image encoding method and device, which can solve the problem of repeated comparison of pixel values ​​and thresholds in the image encoding process, which increases the time and calculation amount of image encoding, and causes the problem of encoding redundancy.

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Embodiment Construction

[0049] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present disclosure as recited in the appended claims.

[0050] An embodiment of the present disclosure provides an image coding method, such as figure 1 As shown, the image encoding method includes the following steps:

[0051] 101. Acquire image frames to be processed.

[0052] The image frame to be processed contains at least one macroblock.

[0053] 102. Perform wavelet decomposition on each macroblock in the image frame to be process...

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Abstract

The invention provides an image encoding method and apparatus, and relates to the technical field of image processing. The problem that pixel values and threshold values are repeatedly compared in animage encoding process, thus increasing the time and the calculation amount of imaging encoding, resulting in coding redundancy is solved. The specific technical scheme is: obtaining an image frame tobe processed; performing wavelet decomposition on the image frame to be processed to obtain an initial bit stream; determining a bit plane in which the bit in the initial bit stream is less than or equal to a preset bit plane as the first bit plane; determining a bit plane in which the bit in the initial bit stream is larger than the preset bit plane as a second bit plane; directly outputting, bythe data in the first bit plane, bit values to obtain a first bit stream to be encoded; processing the data in the second bit plane according to the SPIHT algorithm to obtain a second bit stream to be encoded; and performing entropy enbcoding on the first bit stream to be encoded and the second bit stream to be encoded. The image encoding method and apparatus provided by the invention are appliedto image encoding.

Description

technical field [0001] The present disclosure relates to the technical field of image processing, and in particular to an image encoding method and device. Background technique [0002] Image compression technology is particularly important in the process of image data storage and transmission. Efficient image compression can alleviate the problems of limited image storage space and limited network bandwidth. The algorithm has been widely used in the field of image compression because of its high compression efficiency, low computational complexity, and the ability to realize progressive transmission. However, when using the SPIHT algorithm to encode images, the SPIHT algorithm needs to repeatedly compare pixel values ​​and thresholds, which increases the time and computation of image encoding, resulting in encoding redundancy. Contents of the invention [0003] Embodiments of the present disclosure provide an image encoding method and device, which can solve the problem ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/184H04N19/63H04N19/91
CPCH04N19/184H04N19/63H04N19/91
Inventor 杨丽宁杨磊苏睿
Owner XIAN WANXIANG ELECTRONICS TECH CO LTD
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