Dissertation > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Information processing (information processing) > Pattern Recognition and devices > Image recognition device

Adaptive High Dynamic Range CCD Imaging System

Author LiPeiPing
Tutor YangJinHua
School Changchun University of Science and Technology
Course Optical Engineering
Keywords Dynamic range LCoS CCD imaging system
CLC TP391.41
Type Master's thesis
Year 2011
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With the popularity of digital cameras and other digital imaging devices , the consumers of its performance is also proposed increasing demands . Facing the development bottleneck CCD imaging system has two main aspects : the small low resolution and dynamic range . Two defects seriously affect the performance of the CCD imaging system . To this end , we propose an extension of the dynamic range of the imaging system solutions . The system uses LCoS and DSP combined to achieve the expansion of the dynamic range of the imaging system . Which , LCoS is mainly used to adjust the imaging to the reflectance of the light of the above objects of the CCD image sensor ; DSP ??systems using TI recently introduced the DaVinci digital image processing platform : TMS320DM6437, respectively . It is mainly through a certain algorithm to determine the reflectance of the following image frame by using the received image data , and its role through the controller to the LCoS above LCoS reflectance adjustment to achieve the purpose of obtaining high dynamic image . Papers latter part , gives a schematic diagram of the system , the algorithm of the experiment and the final experimental result . After analysis of the experimental results verify the feasibility of this system is extended dynamic range .

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