Patent ID: 6064433
Filing Date: 2000-05-16
Classification: H04N

Abstract:
A method of filming with a video camera having an imaging device for producing video image data representing a moving video image and a video amplifier stage, the method comprising:specifying a selected area of the moving video image, a first correction factor and a second correction factor;searching for brightness and/or color transitions in the vicinity of a boundary of the selected area by analyzing video image data output from the imaging device;redefining the selected area as being bounded by the transitions; andadjusting the brightness and/or color of said selected area according to said first correction factor when said selected area is at a first position within said moving image, according to said second correction factor when said selected area is at a second position within said moving image, and according to a third correction factor when said selected area is at a position other than said first position or said second position, said third correction factor being generated by interpolation based on said first correction factor and said second correction factor, such that said first, second and third correction factors depend on the position of said selected area within said image.