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Ultra-high-speed image real-time compression method

A compression method and ultra-high-speed technology, applied in image communication, digital video signal modification, electrical components, etc., can solve the problem that the image cannot be recorded, and the camera can only be stopped, so as to ensure real-time data, ensure synchronization, and high portability The effect of sex and versatility

Inactive Publication Date: 2015-02-11
大连戴姆科技有限公司
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Problems solved by technology

[0003] At present, ultra-high-speed cameras both at home and abroad adopt the method of fast acquisition and slow transmission. There is a large amount of memory in the camera. After the camera is full, the camera can only be stopped, and the acquisition can only be continued after all the image data is exported. Therefore, the current international The camera with the longest storage time on the Internet can only record at high speed for 13 seconds, and images longer than 13 seconds will not be recorded

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Embodiment Construction

[0027] The overall processing flow diagram of the video JPEG compression algorithm based on a complete pipeline is as follows: figure 1 As shown, the chip as a whole includes: a color conversion unit, including a color conversion unit, an image partition unit, and a data buffer module; a DCM processing unit, which includes two multi-port data buffers, radix-8 Fourier Transformation unit and address generator; a quantization unit, which contains a real-time divider, Zig-Zag transformation address generator, data buffer, etc.; run-length encoding unit, including data buffer, 0 comparator and summation unit; Huffman coding , containing a DC result buffer, Huffman coefficient table, and result buffer.

[0028] color conversion unit such as figure 2 As shown, the color conversion module converts the input RGB data into YUV. According to the input RGB data, it directly multiplies the matrix to complete the conversion from RGB to YUV space. The converted YUV data divides the image...

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Abstract

The invention discloses a high-frame-rate real-time image compression mode. The high-frame-rate real-time image compression mode adopts a complete production line mode for compressing videos, and the compression rate can reach 20 to 30 times. The invention relates to an ultra-high-speed image real-time compression and transmission technology, in particular to a real-time image compression and transmission technology for an ultra-high-speed industrial camera. The technology can be used for real-time image transmission at a speed being higher than 100 frames per second, and the data transmission volume per second exceeds 600M bytes. The technology adopts the following technical solution scheme comprising the steps that 1, a pixel synchronous clock is generated by a real-time image controller; 2, synchronous images are used as reference, and image information is sent into an image compression circuit of a real-time production line structure. The real-time image compression and transmission technology can be applied to multiple fields, such as automobile collision tests, flame jet tests and slow motion commercial advertisements.

Description

technical field [0001] The invention relates to an ultra-high-speed image real-time compression and transmission technology, especially the real-time image compression and transmission technology of an ultra-high-speed industrial camera, which can be used for real-time image transmission above 100 frames per second, and the amount of data transmitted per second exceeds 600M bytes . Background technique [0002] In recent years, with the development of technologies such as integrated circuits, CCDs, CMOS sensors, and operating systems, ultra-high-speed cameras have entered the stage of practicality. Domestic high-speed cameras have already achieved an acquisition speed of 150 frames per second with 1.3 million pixels; and Similar foreign products can achieve a collection speed of 2000 frames or even higher at 2 million pixels. The application of high-speed and ultra-high-speed cameras can be seen in more and more fields, such as car crash tests, flame spray tests, and slow-m...

Claims

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Application Information

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IPC IPC(8): H04N19/42H04N19/625H04N19/124H04N19/93H04N19/91
Inventor 王超田玉松
Owner 大连戴姆科技有限公司
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