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Mine video image compression and transmission method and apparatus

A technology of video image and transmission method, which is applied in the direction of image communication, digital video signal modification, closed-circuit television system, etc., can solve problems such as difficult transmission of real-time video images, and achieve the effect of improving compression processing and transmission capabilities

Active Publication Date: 2015-07-29
CHINA UNIV OF MINING & TECH (BEIJING)
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Problems solved by technology

[0005] The main purpose of the present invention is to solve the above shortcomings. In order to overcome the problem that the underground personnel positioning system and monitoring system in the existing WSN, zigbee and other wireless networks are difficult to transmit real-time video images, the present invention proposes a method for compressing mine video images. The method of processing and transmission applies the tree-structured orthogonal matching pursuit algorithm based on compressed sensing theory to the image compression and processing of underground video signals, aiming to realize the real-time transmission of mine video images

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  • Mine video image compression and transmission method and apparatus
  • Mine video image compression and transmission method and apparatus
  • Mine video image compression and transmission method and apparatus

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Embodiment Construction

[0044] refer to figure 1 , is the principle block diagram of the traditional mine video image compression and transmission method. The traditional mine video image compression signal acquisition and processing method, the signal acquisition and processing process mainly includes four parts: sampling, compression, transmission and decompression, and its sampling is based on the theory of Nyquist sampling theorem. Sampling first and then compressing wastes a lot of sensing elements, time and storage space, and limits the transmission bandwidth limit of the communication system. The traditional image compression process is to carry out orthogonal basis transformation (such as wavelet transform, discrete cosine transform) on the image, and the data with large absolute value in the obtained data only accounts for a small part, and most of the other data are very small and approximately zero. After setting these small data to zero, encode the remaining data with larger values, whic...

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Abstract

The invention discloses a mine video image compression and transmission method. The mine video image compression and transmission method uses a lossless image compression and processing algorithm based on compressed sensing for achieving down hole video signal compressed sampling sparse representation and algorithm reconstruction, compressing video data produced by a video capture end, sending compressed video data to a video receiving end through a wireless interface, decompressing the received video data through the video receiving end and outputting decompressed video data to a display device. The invention further discloses a mine video image compression and transmission apparatus. The apparatus uses a wireless transmission mode, is high in image compression processing and transmission capability, meets specific mine use environment and safety requirements, is applicable to video surveillance and moving object monitoring in a coal mine down hole wireless network environment, effectively improves the down hole video image compression processing and transmission capability, and ensures video signal real-time transmission in mine WSN (Wireless Sensor Network) and Zigbee wireless network environments.

Description

technical field [0001] The patent of the present invention relates to a wireless communication and video compression transmission technology, in particular, to a mine video image compression and transmission method and device. Background technique [0002] The existing coal mine underground video acquisition, image processing and transmission system uses traditional video acquisition terminal equipment, then undergoes video compression and encoding, and finally transmits through the network. There are problems such as complex hardware design, low reliability, and high transmission bandwidth requirements. In particular, In the mine environment, the video image is greatly affected by noise interference and has low gray contrast. It is difficult to realize the mine video image under the low-speed wireless sensor network (WSN) and Zigbee wireless network by using traditional video image compression and processing methods. Lossless compression and transmission. The traditional s...

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Application Information

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IPC IPC(8): H04N7/18H04N19/90H04N19/42
Inventor 张帆
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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