Camera-Link digital video information superimposing method
A technology of digital video and overlay method, which is applied in the field of image processing, can solve problems such as inability to strictly align video and data, achieve the effect of reducing connection lines and ensuring strict alignment
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[0017] The present invention will be described in further detail below in conjunction with the accompanying drawings:
[0018] Such as figure 1 As shown, the Camera-Link digital video information superimposing method of the present invention includes the following steps:
[0019] Step 1. Perform video decoding on the digital video of the input Camera-Link interface, that is, directly send the video signal to the decoding chip DS90CR286 or DS90CR288, then the parallel n-bit image data signal Pix Data (picture The number of data bits n is determined by the camera model, usually n = 8 or 10) and three control signals (frame synchronization FVAL, line synchronization LVAL, pixel clock Pixclk), the specific timing relationship is as follows figure 2 Shown. The decoded image data signal and three control signals are sent to the FPGA chip, and the digital video information can be superimposed through FPGA programming.
[0020] in figure 2 Among them, the high level period of FVAL and LVA...
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