Self-adaptive resolution ratio implementing method based on CMOS image sensor

A technology of an image sensor and an implementation method, which is applied in the directions of image communication, color TV components, and TV system components, etc., can solve the problems of slow target recognition rate, waste of storage space, and large amount of redundant video data, etc. The effect of improving hardware usage efficiency, increasing speed and saving video storage space

Active Publication Date: 2014-10-29
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of wasting storage space and slow target recognition rate due to the large amount of redundant video data existing in photoelectric detection systems and video surveillance systems, and proposes a method for implementing adaptive resolution based on CMOS image sensors

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  • Self-adaptive resolution ratio implementing method based on CMOS image sensor

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Embodiment Construction

[0021] Specific embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0022] like figure 1 As shown, the working process of the adaptive resolution implementation method based on the CMOS image sensor is as follows:

[0023] Step 1: Initialize the resolution of the CMOS image sensor and set it to medium resolution mode. The applied CMOS image sensor must have the function of variable resolution, that is, the resolution of the CMOS image sensor can be adjusted by changing the level of its external pins or the configuration of the register, so as to realize the subsequent output image resolution. Dynamic control (increase, maintain, or decrease) of

[0024] Step 2: Acquire images according to the current resolution.

[0025] Step 3: Perform image processing on the image obtained in the second step to determine whether there is a dynamic target in the field of view.

[0026] Step 4: According to the judgment result of St...

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Abstract

The invention provides a self-adaptive resolution ratio implementing method based on a CMOS image sensor. Firstly, whether a dynamic target exists in an image output by the CMOS image sensor is judged based on an image processing technology. When the dynamic target exists in a view field, the resolution ratio of the CMOS image sensor is adjusted to be the best according to image reorganization requirements; when no dynamic target exists in the view field, the resolution ratio of the CMOS image sensor is automatically reduced. According to the self-adaptive resolution ratio implementing method, through self-adaptively controlling the resolution ratio of the CMOS image sensor, redundant image information is reduced as much as possible, and use efficiency of the memory space of a hard disk is improved. Meanwhile, on the premise of meeting target reorganization, the resolution ratio of the image output by the sensor is self-adaptively reduced, and thereby a speed for recognizing the target is improved.

Description

technical field [0001] The invention relates to a method for realizing adaptive resolution based on a CMOS (complementary metal oxide semiconductor) image sensor, belonging to the field of photoelectric technology. Background technique [0002] With the continuous development of CMOS image sensor technology, video technology based on CMOS image sensor has been widely used in fields such as aviation, spaceflight and video surveillance. Video data of video surveillance systems and target detection systems often need to be stored in external hard disks for backup and subsequent retrieval. In conventional target detection and recognition and video surveillance systems, the resolution of the image sensor output image remains unchanged. For image sensors that work continuously, if you want to store longer video data, or clearer high-resolution video images, you need a larger hard disk storage space. However, target detection and recognition and real-time monitoring are mainly fo...

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Application Information

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IPC IPC(8): H04N5/343H04N5/374
Inventor 郝群宋勇胡摇王子寒
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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