摘要:
A method for testing a motion vector is described, which has: provision of at least one item of motion information assigned to the image sequence; storing a first image section of the first image in a first buffer memory and storing a second image section of the second image in a second intermediate memory, whereby a position of the first image section in the first image and a position of the second image section in the second image have reciprocal offset, which is dependent on the at least one item of motion information; determining a first image block in the first image section and a second image block in a second image section using the motion vector; comparing the contents of the first and of the second image block.
摘要:
An image to be interpolated is subdivided into a number of image blocks and a motion estimation technique is implemented to provide at least one initial motion vector for each of the image blocks. A modified motion vector is generated for each image block based on the initial motion vectors assigned to the individual image blocks. At least one additional image block is determined through which the motion vector assigned to the given image block passes at least partially, and the modified motion vector is generated as a function of the initial motion vector that is assigned to this at least one additional image block.
摘要:
A method for testing a motion vector is described, which has: provision of at least one item of motion information assigned to the image sequence; storing a first image section of the first image in a first buffer memory and storing a second image section of the second image in a second intermediate memory, whereby a position of the first image section in the first image and a position of the second image section in the second image have reciprocal offset, which is dependent on the at least one item of motion information; determining a first image block in the first image section and a second image block in a second image section using the motion vector; comparing the contents of the first and of the second image block.
摘要:
A method for detecting a video signal that represents an image sequence and exhibits linewise repeated video data comprises selecting a plurality of line groups each having a first, a second and a third line, which originate from two consecutive fields in the case of a field sequence and from one field in the case of a frame sequence. The method determines for each line group a first line-distance measure for a difference between video contents of the first and second lines and a second line-distance measure for a difference between video contents of the second and third lines. The method then interprets the first and second line-distance measures with regard to the presence of a significant difference between these line-distance measures.
摘要:
A method for processing a video image sequence with a number of successive images and an image processing device for processing a video image sequence are described. The method comprises: generation of at least one scaled image sequence (F11, F12) from the video image sequence (F); generation of a motion-compensated scaled image sequence (F40) from the scaled image sequence (F50); generation of a motion-compensated output image sequence (F′) from the scaled image sequence (F40); wherein the generation of the motion-compensated scaled image sequence (F40) comprises the determination of a motion vector field based on at least two images (F11n−1; F11n) of the scaled image sequence (F11, F12) and the interpolation of an image using the at least two images and the motion vector field, and wherein the at least one input scaling factor (S11, S12) is dependent on motion information that is represented by at least one motion vector field that was determined for the temporally preceding images of the at least one scaled image sequence (F11, F12).
摘要:
A method is described for selecting a motion vector for a first image block of an image of an image sequence from a number of test vectors, wherein at least one of these test vectors is a motion vector of a further image block that is arranged temporally and/or spatially adjacent to the first image block, or a vector formed by modification of this motion vector, and wherein the method covers:Determining a distance measurement for each test vector, Determining a vector length of the test vectors and determining the test vector with the shortest vector length or a first subgroup of test vectors with the shortest vector lengths compared to the other test vectors, Determining a modified distance measurement to the shortest test vector or to the test vectors of the subgroup depending on the distance measurement determined to the respective test vector and depending on a length measurement, Comparing the modified distance measurement of the shortest motion vector or the modified distance measurement of the test vectors of the first subgroup to the distance measurements of the other test vectors and selecting one of the test vectors depending on this comparison.
摘要:
The invention relates to a method for rendering an image sequence. wherein an individual image is rendered by rendering monochromatic subimages in temporal succession. A subimage sequence obtained by temporal sequencing of the subimages is generated in motion-compensated fashion.