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Image coding method, image decoding method and device for embedded system

An embedded system and image coding technology, which is applied in the field of image processing, can solve problems such as limited hardware resources, and achieve the effects of less hardware resources, concise algorithms, and simple file structure

Inactive Publication Date: 2011-05-25
BEIJING BEWINNER DIANYI INFORMATION TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the problem that embedded systems have limited hardware resources in processing images, the present invention provides an image encoding and decoding method for embedded systems, which simplifies the image processing process and adapts to the limited hardware resources of embedded systems.

Method used

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  • Image coding method, image decoding method and device for embedded system
  • Image coding method, image decoding method and device for embedded system
  • Image coding method, image decoding method and device for embedded system

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Embodiment Construction

[0040] In this part, the technical solutions of the present invention are described in detail in conjunction with the accompanying drawings.

[0041] figure 1 An embodiment of the encoding method of the present invention is shown. Based on the following figure 1 The sequence of the flow shown will be described.

[0042] The step of constructing a color unit: performing the following steps for each pixel in the image with pixels arranged in M ​​rows×N columns: mapping the color value or color index of the pixel to a color unit. The meaning of M rows×N columns is that there are M pixels in one row and N pixels in one column in the image, and M and N are of course natural numbers. The aforementioned color unit is data composed of several bytes, and is used to store the color value or color index of the pixel (that is, the pixel having a mapping relationship with the color unit). The color index refers to the index corresponding to a certain color value in the library when the...

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Abstract

The invention provides an image coding method, an image decoding method, an image coding device and an image decoding device for an embedded system. The image coding method comprises the following steps of: mapping a color value or a color index of each pixel in an image in which pixels are arranged in M rows*N columns into a color unit, wherein the color unit comprises a plurality of bytes and is used for storing the color value or the color index of the pixel; storing values of M and N in a header data set; connecting the color units sequentially to form a one-dimensional color unit set; and merging the color unit set and the header data set to form image coding data. The image coding method can be widely applied to the image processing process of the embedded system, and the problem that hardware resources of the embedded system in the image processing process are limit is solved.

Description

technical field [0001] The invention relates to an image processing technology, in particular to an image processing technology in an embedded system. Background technique [0002] Currently in embedded systems, most of the encoding and decoding of images still use standards such as PNG, GIF or BMP. The advantage of adopting these standards is that it has very good compatibility, and embedded systems can use a large number of existing images that meet the above standards. Especially embedded systems such as mobile phones can utilize a lot of existing image resources, which undoubtedly brings a lot of convenience to users. [0003] However, in embedded systems, there are obvious disadvantages of using these standards for images. The above-mentioned image standards are relatively complicated due to the consideration of many issues such as compatibility, and have relatively high requirements for system hardware. Now for larger hardware systems such as PCs, image processing r...

Claims

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Application Information

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IPC IPC(8): H04N7/26H04N1/56H04N19/186H04N19/42
Inventor 王晓东李建涛
Owner BEIJING BEWINNER DIANYI INFORMATION TECH CO LTD
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