Motion scene imaging method and system based on area array cmos image sensor
An image sensor and scene imaging technology, applied in image communication, components of TV systems, components of color TVs, etc., can solve problems such as image shift blur, improve dynamic range, and avoid image shift blur in single exposure. Effect
Active Publication Date: 2019-04-16
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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[0004] In view of this, the present invention provides a moving scene imaging method and system based on an area array CMOS image sensor, so as to solve the problem of image motion blur in the high-speed moving scene imaging of the CMOS image sensor in the prior art
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[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0040] The CMOS image sensor is an Active Pixel Sensor (APS for short). The difference from the CCD (Charge-coupled Device, charge-coupled device) image sensor is that the peripheral circuits of the CMOS image sensor can be integrated into the chip. , charge measurement, its related double sampling, A / D conversion, image processing and even compression coding and other circuits can be packaged together with the photosensitive unit in the same chip, which makes ...
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The present application discloses a moving scene imaging method and system based on an area array CMOS image sensor. Through the fusion of coded exposure and digital domain TDI technology, with coded exposure sequence as the framework, different levels of digital imaging are performed in each single exposure process. Domain time delay integration, processing the digital image formed by the CMOS image sensor to obtain a single exposure image after image motion compensation, superimposing multiple single exposure images after image motion compensation to obtain a coded exposure image, and then reverse The convolution operation finally obtains the clear target image. The moving scene imaging method based on the area array CMOS image sensor provided by the present invention can avoid the problems of single-exposure image motion blur and limited dynamic range of digital domain TDI in encoding exposure in high-speed moving scene imaging, so that the area array CMOS image sensor It can be applied to high-speed motion scene imaging, eliminate image motion blur, and improve imaging quality.
Description
technical field [0001] The present invention relates to the field of imaging technology, in particular to a moving scene imaging method and system based on an area array CMOS (Complementary Metal Oxide Semiconductor, Complementary Metal Oxide Semiconductor) image sensor. Background technique [0002] The key problems to be solved in research and application fields such as aerospace and aviation remote sensing include high-speed motion scene imaging and high dynamic range imaging. The so-called moving scene is a general term for the relative motion between the imaging subject, namely the camera, and the imaging object, namely the target. Taking aerospace remote sensing applications as an example, image motion blur is one of the most prominent problems in remote sensing imaging, whether it is an early return film camera or a transmission digital camera that dominates today. The reason for the existence of image motion blur is: within the exposure time of the camera, the image...
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IPC IPC(8): H04N5/232H04N5/265H04N5/355
CPCH04N5/265H04N23/80H04N25/58
Inventor 兰太吉龙科慧李俊霖薛旭成
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI