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Newton interpolation algorithm system based on real-time image to enlarge

Author: YuShaoNing
Tutor: LinZuLun
School: University of Electronic Science and Technology
Course: Physical Electronics
Keywords: video wall system image zoom, Newton interpolation Interpolation function
CLC: TN941
Type: Master's thesis
Year: 2005
Downloads: 343
Quote: 4
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Abstract


This project serves the video wall system. The main purpose is to improve quality of video wall system’s output, and let the output part not to depend on the costly import devices. The final purpose is to find a scheme of video wall system which has high quality and low price, and push our video wall towards the market. In the project, we used software simulation combining with hardware realization. In the step of the theory researching, we studied the image zoom methods closely relating to output effect of video wall controller, we analyzed the traditional image zoom methods include nearest neighbor interpolation, bilinear interpolation, and discussed the scheme of their hardware realization. We used MATLAB to process software simulation. Taking character and normal image as example, we contrasted the traditional and the new image zoom methods mentioned above, and got the results of subjective visual comparison and objective evaluation. We analyzed the principles of them, and put forward the idea that based on the character of image to be enlarged,flexibly choosing appropriate zooming method to achieve optimal zooming effect. Then we put forwards a real time scheme to use the two methods mentioned above alternatively. Based on the image zoom theory, we designed a relatively simple circuit of TV wall video encoding output. The part of image dividing and zooming are realized by FPGA. Based on an IC named THS8134, we designed the part of D/A, and made a free-flicker video encoding output circuit.We synthetically used Microcomputer System,DSP FPGA and CPLD in application system designing.During the

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > TV > TV signal theory
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