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657.003=a then a = f . m where f is focal length in meter and m number of pixel by meter (inverse of pixel size). if you have resize the images by half it means pixel size is double then a becomes 328.5

657.003=a then a = f . m where f is focal length in meter and m number of pixel by meter (inverse of pixel size). if you have resize the images by half it means pixel size is double then a becomes 328.5328.5 (ref. multiple view in geometry p157)

657.003=a then a = f . m where f is focal length in meter and m number of pixel by meter (inverse of pixel size). if you have resize the images by half it means pixel size is double then a becomes 328.5 (ref. multiple view in geometry p157)

resize means using opencv function and not changing resoultion using method set of videocapture class