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Compression method of binary image and decompression method of binary image

A binary image and compression method technology, applied in the field of image encoding and decoding, can solve problems such as low efficiency, underutilization of registers, waste of memory, etc., and achieve the effect of saving memory space

Inactive Publication Date: 2018-11-13
深圳市傲睿智存科技有限公司
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Problems solved by technology

[0003] In the process of realizing the present invention, the inventor found that the prior art has at least the following problems: many times, binary images need to be processed, such as smoothing, dilation, corrosion, thinning, edge detection, contour detection, etc., if directly Binary image pixel values ​​are operated, which wastes memory and does not make full use of registers; in addition, in binary image transmission and storage, if the original binary image is directly transmitted and saved, it will cause data redundancy and low efficiency

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  • Compression method of binary image and decompression method of binary image
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  • Compression method of binary image and decompression method of binary image

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Embodiment Construction

[0039] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0040] Implementations of various embodiments of the present invention will now be described with reference to the accompanying drawings. In the following description, use of suffixes such as 'module', 'part' or 'unit' for denoting elements is only for facilitating description of the present invention and has no specific meaning by itself.

[0041] It should also be further understood that the term "and / or" used in the description of the present invention and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations .

[0042] The descriptions involving "first", "second" and so on in the present invention are only for descriptive purposes, and should not be understood as indicating or implying their relative importance or...

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Abstract

The invention discloses a compression method of a binary image and a decompression method of the binary image. In the compression method, eight pixel values of the binary image are loaded to a register which comprises eight bytes D0-D7, and then, the binary image is compressed by performing logic operation, interleaved storage, transposition and so on, through the eight bytes D0-D7. According to the compression method of the binary image and the decompression method of the binary image, compressed data not only can be used for transmission and storage, but also can be used as input data of binary image processing (erosion and dilation, thinning, smoothing and so on); memory space can be saved, faithful representation data of pixels can be used effectively, and compression ratio can be 5.333-8.

Description

technical field [0001] The invention relates to the technical field of image coding and decoding, in particular to a binary image compression and decompression method. Background technique [0002] A binary image is a digital image in which each pixel has only two possible values ​​(represented as "0" and "1"). People often use black-and-white and monochrome images to represent binary images, but they can also be used to represent any image with only one sample value per pixel, such as grayscale images, chrominance images, etc. Common text documents and scanned documents are typical binary images. [0003] In the process of realizing the present invention, the inventor found that the prior art has at least the following problems: many times, binary images need to be processed, such as smoothing, dilation, corrosion, thinning, edge detection, contour detection, etc., if directly Binary image pixel values ​​are operated, which wastes memory and does not make full use of regi...

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Application Information

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IPC IPC(8): H04N19/423H04N19/88
CPCH04N19/423H04N19/88
Inventor 赖学金周正宁
Owner 深圳市傲睿智存科技有限公司
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