METHODS AND DEVICES FOR CODING AND DECODING IMAGES, TELECOMMUNICATIONS SYSTEM COMPRISING SUCH DEVICES AND COMPUTER PROGRAM IMPLEMENTING SUCH METHODS
First Claim
Patent Images
1. A method of coding a digital image, comprising a step of coding in a format comprising a lower definition layer and at least one higher definition layer, characterized in that it further comprises:
- a step of determining at least one data rate and/or at least one distortion corresponding to a target definition between the lower definition and a higher definition,a step of associating, with the result of the coding step, information representing at least one data rate and/or at least one distortion corresponding to a target definition.
1 Assignment
0 Petitions
Accused Products
Abstract
The method of coding a digital image, comprising a step of coding in a format comprising a lower definition layer and at least one higher definition layer further comprises:
- a step of determining at least one data rate and/or at least one distortion corresponding to a target definition between the lower definition and a higher definition and
- a step of associating, with the result of the coding step, information representing at least one data rate and/or at least one distortion corresponding to a target definition.
89 Citations
46 Claims
-
1. A method of coding a digital image, comprising a step of coding in a format comprising a lower definition layer and at least one higher definition layer, characterized in that it further comprises:
-
a step of determining at least one data rate and/or at least one distortion corresponding to a target definition between the lower definition and a higher definition, a step of associating, with the result of the coding step, information representing at least one data rate and/or at least one distortion corresponding to a target definition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 43, 45)
-
-
14. A method of decoding a digital image coded in a format comprising at least one lower definition layer and at least one higher definition layer, to form an image having a display definition, characterized in that it comprises:
-
a step of obtaining an item of information representing at least one data rate and/or at least one distortion, for at least one target definition, between the lower definition and a higher definition, a step of determining a decoding rate, on the basis of the display definition and said item of information representing at least one data rate and/or at least one distortion, for a target definition, a step of decoding a set of data of a higher layer of higher definition than the display definition, said set of data corresponding to the decoding rate determined during the determining step, to provide a decoded image having said higher definition, a step of downsampling said decoded image to provide the image having said display definition. - View Dependent Claims (15, 16, 17, 18, 19, 44, 46)
-
-
20. A device for coding a digital image, comprising a means for coding in a format comprising a lower definition layer and at least one higher definition layer, characterized in that it further comprises:
-
a means for determining at least one data rate and/or at least one distortion corresponding to a target definition between the lower definition and a higher definition and a means for associating, with the result of the coding, information representing at least one data rate and/or at least one distortion corresponding to a target definition. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
-
-
34. A device for decoding a digital image coded in a format comprising at least one lower definition layer and at least one higher definition layer, to form an image having a display definition, characterized in that it comprises:
-
a means for obtaining an item of information representing at least one data rate and/or at least one distortion, for at least one target definition, between the lower definition and a higher definition, a means for determining a decoding rate, on the basis of the display definition and said item of information representing at least one data rate and/or at least one distortion, for a target definition, a means for decoding a set of data of a higher layer of higher definition than the display definition, said set of data corresponding to the decoding rate determined the determining means, to provide at least one decoded image having said higher definition, a means for downsampling said decoded image to provide an image having said display definition. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41)
-
-
42. (canceled)
Specification