| 摘要 |
PCT No. PCT/SE93/00314 Sec. 371 Date Oct. 13, 1994 Sec. 102(e) Date Oct. 13, 1994 PCT Filed Apr. 8, 1993 PCT Pub. No. WO93/21728 PCT Pub. Date Oct. 28, 1993A method for detecting and removing errors in pictures associated with a picture sequence in digital video sigals is disclosed. For this purpose an error detector and a filter for continuous processing of pixels associated with said pictures is used. The error detector detects an error if at least one error pixel, being a pixel with a specific contrast, i.e. difference in pixel intensities, is found when comparing the pixel intensities of pixels belonging to at least two pictures in said picture sequence. The error detector determines an error shape, and the filter which is an adaptive filter, replaces the intensity of a current error pixel with a mathematical function of pixel intensities of the current pixel and pixels surrounding the error shape. |
