Device and method for acquiring digital image with high dynamic range in real time

A high dynamic range, digital image technology, applied in image communication, image enhancement, image data processing, etc., can solve the problems of large impact on imaging quality, narrow dynamic range, difficult scene observation and detection quality requirements, etc., to achieve enhanced details Features, quality-enhancing effects
CN102158653AInactive Publication Date: 2011-08-17DONGHUA UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
DONGHUA UNIV
Publication Date
2011-08-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a device and method for acquiring a digital image with high dynamic range in real time, which are used for synthesizing an image with high dynamic range in real time and outputting the image by directly utilizing an embedded image processing system. The device comprises an FPGA (Field Programmable Gate Array) programmable logic device, a CCD (Charge Coupled Device) imaging array, a video dedicated A / D chip, a coprocessor DSP (Digital Signal Processor) and a static random access memory (SRAM); and a system adopts two working modes of internal exposure and external exposure. In the working process, the FPGA is a central control and computation component, the DSP is the coprocessor, and image analysis and related parameter computation are realized. By means of the method disclosed by the invention, the image with high dynamic range can be generated in real time, the scene information of a bright region and a dark region is effectively expressed, the detailed characteristics of the image are enhanced, and the quality of the image shot by the CCD is improved.
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Description

technical field

[0001] The invention belongs to the technical field of high-precision imaging and detection, and in particular relates to a real-time high dynamic range digital image acquisition device and method. Background technique

[0002] With the rapid development of science and technology, the continuous development of monitoring technology, the continuous improvement of detection and fine processing accuracy, and the continuous change of processing objects, higher and higher requirements are put forward for image observation, processing and feature detection, especially in monitoring And the field of X-ray detection, its products have deeply affected the major fields of global economic development, and the image detection of semiconductor microelectronics industry, optical communication, optical storage, aerospace industry, biochip and other products is becoming more and more important. High-precision detection of fine processing has always been an important part of ...

Claims

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