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Compressing and decompressing method of image of light emitting diode (LED) display screen

A technology of LED display and image compression, applied in image communication, digital output to display devices, static indicators, etc., can solve problems such as inability to observe

Inactive Publication Date: 2012-11-14
UNILUMIN GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In fact, if there are slight errors in the original picture, and the errors cannot be observed on the LED display, then these small errors are acceptable, and the neglect of small errors brings a huge space for image compression

Method used

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  • Compressing and decompressing method of image of light emitting diode (LED) display screen
  • Compressing and decompressing method of image of light emitting diode (LED) display screen
  • Compressing and decompressing method of image of light emitting diode (LED) display screen

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Embodiment Construction

[0041] In order to describe the technical content, structural features, achieved goals and effects of the present invention in detail, the following will be described in detail in conjunction with the embodiments and accompanying drawings.

[0042] see Figure 1~Figure 10 , LED display screen image compression method of the present invention, comprises the following steps:

[0043] 3) Run the first compression mode: select I (2+3i, 2+3j) as the central pixel point, determine the coordinates of the surrounding pixel points of the central pixel point, and compare the pixel value of the central pixel point with the pixel value of the surrounding pixel points ; The comparison result obtained by comparing the pixel value of the center pixel with the pixel value of its surrounding pixels is compared with the upper limit value k of the error, if the comparison result is greater than or equal to k, the pixel value of the pixel is retained, if the comparison result If it is less than ...

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Abstract

The invention discloses a compressing and decompressing method of an image of a light emitting diode (LED) display screen. The compressing method comprises the following steps: 1) determining a coordinate; 2), setting an error permission upper limit value; 3) operating a first compression mode; 4) operating a second compression mode; 5) operating a third compression mode; 6) operating a fourth compression mode; 7) operating a fifth compression mode; 8) operating a sixth compression mode; 9) operating a seventh compression mode; 10) operating an eighth compression mode; 11) operating a ninth compression mode; and 12) selecting compression modes for compression. In the invention, certain error coefficients are directly set in a space domain to compress the image, one compression mode with the best compression effect is selected in the nine compression modes through the trial operation of the nine compression modes, and finally, the compressed image is decompressed. The decompression is simple and dim edges do not occur.

Description

technical field [0001] The invention relates to the field of LED display screens, in particular to a method for compressing and decompressing images of LED display screens. Background technique [0002] In the development process of LED display screen, the application of remote control LED display screen is more and more extensive. In the process of remote control, it is inevitable to need to transmit data. In order to improve the efficiency of data transmission, it is necessary to compress and decompress data. [0003] Picture compression coding is one of the important contents of digital image processing. The basic principle of compression is to remove redundant information in the picture, because there are many correlations between the pixels of a picture, and the amount of information can be deleted through certain program operations. The same pixels are used to achieve the purpose of reducing redundant compressed images. [0004] In the process of image compression, it...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/26G09G5/36G06F3/14H04N19/12H04N19/182
Inventor 林洺锋王伟张春旺陈之良康敏武
Owner UNILUMIN GRP