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Video image preprocessor on basis of FPGA

A technology for image preprocessing and video images, applied in image memory management, processor architecture/configuration, color signal processing circuits, etc., can solve problems such as DSP video acquisition port transmission bottlenecks, achieve convenient modification and upgrade, and solve transmission bottlenecks , the effect of rich internal resources

Inactive Publication Date: 2008-11-19
TIANJIN YAAN TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the invention is to overcome the deficiencies in the prior art, propose a kind of video image preprocessor based on FPGA that can carry out real-time preprocessing and solve the transmission bottleneck problem of DSP video acquisition port to the video image data of high resolution image sensor

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  • Video image preprocessor on basis of FPGA
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  • Video image preprocessor on basis of FPGA

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Embodiment Construction

[0027] Embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings:

[0028] The application of an FPGA-based video image preprocessor in a video system such as figure 1 As shown, its front end is connected with image sensors such as CMOS or CCD, and its back end is connected with digital signal processor (DSP) so as to form a video processing system. In the present embodiment, FPGA has adopted the CycloneII series FPGA chip of Altera Company, The digital signal processor (DSP) has adopted TI's C64x series DSP processor. The FPGA-based video image preprocessor can preprocess the video image data of the front-end image sensor, and transmit the preprocessed video image data to the DSP.

[0029] Such as figure 2 As shown, the FPGA-based preprocessor is composed of an image preprocessing module and a FIFO buffer module. The input end of the image preprocessing module is connected to the video image data and synchroniz...

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Abstract

The invention relates to a video image preprocessor based on the FPGA, which belongs to the safe monitoring field. The video image preprocessor based on the FPGA is characterized in that the video image preprocessor is composed of an image preprocessing module and an FIFO buffering module which are connected. The input terminal of the image preprocessing module is connected with a video image data and a synchronization signal, and the output terminal of the FIFO buffering module outputs the processed video image data and DSP data to read an application signal. The video image preprocessor realizes the real-time preprocessing function of the video image data of the image sensor with a high resolving power which is more than 2 million, solves the problem of transmission bottleneck at video gathering port when the video image data is processed by the DSP and has the advantages that the realization is simple, the compatibility is strong, the stability is high, and the upgrading and the modification are convenient etc., thus the video image preprocessor based on the FPGA can be widely applied in the video monitoring system adopting a large pixel image sensor.

Description

technical field [0001] The invention relates to the field of safety monitoring, in particular to an FPGA-based video image preprocessor. Background technique [0002] In the field of security monitoring, a large number of video surveillance systems are required. The cameras in the video surveillance system record the monitoring site, and the monitoring personnel can see the actual situation of the monitoring site from the display device without going to the site to patrol. Although ordinary surveillance cameras can traverse every position of the panoramic 360-degree viewing angle, they cannot monitor the situation of the entire panoramic field of view at the same time. In order to solve this problem, more and more video recording devices (such as curved panoramic mirrors) , fisheye lens, etc.) are used in video surveillance systems. The principle of this video surveillance system is: through the characteristics of panoramic camera equipment, the entire panoramic image is map...

Claims

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Application Information

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IPC IPC(8): H04N9/64G06T1/20G06T1/60H04N7/18
Inventor 权立伟
Owner TIANJIN YAAN TECH CO LTD
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