MiniOSD video overlay display method and circuit applied to small UAV navigation
A small unmanned aerial vehicle, video overlay technology, applied in TV, electrical components, color TV and other directions, can solve the problems of inflexible addition and deletion of local flight parameter modules, consumption of hardware resources, occupation of system memory, etc., to achieve convenient implementation, circuit structure and other problems. Simple, reduced footprint and power consumption
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[0026] The present invention adopts the flight parameter superposition display design scheme of sub-module layering:
[0027] 1) Divide the flight parameters into N categories, and arrange each category on a certain layer of the OSD to obtain N parameter layers;
[0028] 2) Determine the class where the flight parameters to be displayed are located, shield the parameter layer corresponding to the class that does not contain the flight parameters to be displayed in the above N parameter layers, and use the aliasing method to set the parameters corresponding to the class where the flight parameters to be displayed are located layer is superimposed with the original image layer VIN to generate the final OSD image VOUT.
[0029] Such as image 3 , in the generated superimposed image, these four parameter modules are respectively displayed on the four corners of the video image. When the operator only needs GPS parameters and no other information, the OSD layer 1, OSD layer The 2...
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