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

Inactive Publication Date: 2011-08-17
DONGHUA UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] Based on the current imaging system, its imaging quality is greatly affected by the environment, especially under certain lighting conditions, the images acquired by the CCD have a narrow dynamic range, especially for bright or d...

Method used

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

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Embodiment Construction

[0030] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

[0031] Such as Figure 1-4Shown, hardware equipment of the present invention comprises CCD imaging front, FPGA programmable logic device (being called for short FPGA), video special-purpose A / D chip, coprocessor DSP (being called for short DSP) and static random access memory SRAM (being called for short SRAM) Group, etc., the central control unit is composed of FPGA programmable logic device as the core device, realizes the e...

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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.

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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Application Information

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IPC IPC(8): H04N5/232H04N5/235H04N5/357G06T5/00
Inventor 钟平王士乐涂新星叶韬罗年
Owner DONGHUA UNIV
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