Image signal converting method and image signal converting apparatus
AssigneeSony Corporation
InventorsTetsujiro Kondo, Yasuhiro Fujimori, Hideo Nakaya, Masashi Uchida
Life of this patent
Estimating the term…
Abstract
In an image signal converting method and an image signal converting apparatus, it is possible to perform a proper classification considering various signal characteristics of input image data and convert low-resolution input image data to high-resolution image data by using not only a classifying means 56 for classifying input images in accordance with the level distribution pattern of the input images but also a classifying means 50 for classifying input images in accordance with the movement of the input images and deciding the final class D32 of input image signals by both CLASS0 and CLASS1 obtained by both classifying means 50 and 56.
Claims44
An image signal converting apparatus for converting a first input image signal to a second image signal different from said first image signal, comprising:
- a class code deciding means for deciding the class of a noticed pixel in accordance with the movement indicated by a change of at least one pixel in the vicinity of the noticed pixel between at least a first input image and a second input image of said first input image signal and patterns of at least one pixel in the vicinity of the noticed pixel in at least one of said first or second input images of said first input image signal, and generating a class code showing the class;
- a predictive coefficient data storage means for storing predictive coefficient data serving as the information for converting said first input image signal to said second input image signal for each class code to output said predictive coefficient data corresponding to said class code;
- and
- a predictive operating means for generating said second image signal by using the predictive coefficient data output from said predictive coefficient data storage means corresponding to said class code and a plurality of pixels spatially and/or temporally present in the vicinity of said noticed pixel and thereby performing predictive operation.
An image signal converting apparatus for converting a first input image signal to a second image signal different from said first image signal, comprising:
- a class code deciding means for deciding the class of a noticed pixel in accordance with the movement indicated by a change of at least one pixel in the vicinity of the noticed pixel between at least a first input image and a second input image of said first input image signal and patterns of at least one pixel in the vicinity of the noticed pixel in at least one of said first or second input images of said first input image signal, and generating a class code showing the class;
- and
- a predicted value data storage means for storing predicted value data for converting said first input image signal to said second input image signal for each class code to output said predicted value data corresponding to said class code.
An image signal converting method for converting a first input image signal to a second image signal different from said first image signal, comprising the steps of:
- deciding the class of a noticed pixel in accordance with the movement indicated by a change of at least one pixel in the vicinity of the noticed pixel between at least a first input image and a second input image of said first input image signal and patterns of at least one pixel in the vicinity of the noticed pixel in at least one of said first or second input images of said first input image signal, and generating a class code showing the class;
- storing predictive coefficient data for converting said first input image signal to said second input image signal for each class code, to output said predictive coefficient data corresponding to said class code;
- and
- generating said second image signal by using the predictive coefficient data output from said predictive coefficient storage step corresponding to said class code and a plurality of pixels spatially and/or temporally present in the vicinity of said noticed pixel and thereby performing predictive operation.
An image signal converting method for converting a first input image signal to a second image signal different from said first image signal, comprising the steps of:
- deciding the class of a noticed pixel in accordance with the movement indicated by a change of at least one pixel in the vicinity of the noticed pixel between at least a first input image and a second input image of said first input image signal and patterns of at least one pixel in the vicinity of the noticed pixel in at least one of said first or second input images of said first input image signal, and generating a class code showing the class;
- and
- storing predicted value data for converting said first input image signal to said second input image signal for each class code to output said predicted value data corresponding to said class code.
Dependencies are inferred from the claim text.