Abstract:We designed a multi-software-hybrid-programming digital image processing software for high definition single lens digital imaging system. In this digital image processing software system, LabVIEW ,MATLAB,Quartus ii and C++ are all employed to call DLL library to invoke the CMOS, read data, process image and improve the image quality. Such a software system is specially designed to extend the depth of field in single lens imaging system. Especially, one-button-operation function is designed to reduce the operating time. The results showed that with this software system, even in the large defocus case, the high definition and clear images are ready to output from the single lens imaging system. This system can be used in the fields of biological and medical microscopic imaging, machine vision, etc.
A new digital video watermarking algorithm for TV Program stream was proposed. Through technologies of thinning image and skeleton scaling, the size of embedded data is reduced. The compressed watermark signal is embedded into the unchanged area of I frame. The experimental results demonstrate that this method can not only ensure the desirable invisibility, but also avoid the computing cost of decoding.
With reverse thinking, based on the phenomenon of chromatic dispersion, double monochromatic light sources scheme was used to solve the phenomenon of defocus in large-depth-field single lens digital imaging system. Two specific narrow bandpass filter was employed to filter the LEDs into two monochromatic light sources. The self-made circuit based on FPGA, LabView and Matlab hybrid programming software were well designed to fulfill the digital image processing. Experimental results show that such a single-lens digital imaging system can greatly reduce the chromatic aberration, extend the depth of field imaging and improved the image quality. This system can be extensively used in the fields of machine vision and medical microscopic imaging.
We proposed a method to resolve the problem of optical system defocus phenomenon by using the chromatic aberration of the single lens optical imaging system through reverse thinking. Furthermore, we designed and built the production which use SDRAM to collect data for CMOS image information literacy which was connected to the computer via USB transmission and the self-made circuit based on FPGA. Finally, some high-definition images can be obtained by using LabVIEW and MATLAB software programming to realize the data conversion, function calls, and image processing. The production is referred to the camera imaging system, specially, it can involves the problem which needs to solve the single lens of the depth of field and expand the depth of field in imaging system.
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