Method and apparatus for estimating channel induced distortion
First Claim
Patent Images
1. A method in a distortion calculator computer for estimating distortion for an inter-coded image, comprising:
- accessing with the distortion calculator computer an average channel distortion estimated for a previously coded image; and
calculating with the distortion calculator computer an average channel distortion for the inter-coded image as said average channel distortion estimated for the previously coded image scaled by a scaling factor (1-P)(a(1−
β
)+β
)+hP, where P represents a packet loss rate, β
represents an intra rate, a is a parameter associated with inter-prediction, c is a parameter associated with intra-prediction, and h is a parameter associated with concealment,where;
the inter-coded image is encoded with inter-prediction and temporal concealment with non-integer motion vectors, and without intra-prediction and deblocking filtering,the inter-coded image is encoded with inter-prediction and temporal concealment with non-integer motion vectors, with intra-prediction, and without deblocking filtering, orthe inter-coded image is encoded with inter-prediction and temporal concealment with non-integer motion vectors, and with intra-prediction and deblocking filtering.
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Abstract
There are provided methods and apparatus for estimating channel induced distortion. A method for estimating distortion for an inter-coded image includes the step of calculating an average channel distortion for received inter-coded macroblocks in the inter-coded image as a previous average channel distortion multiplied by a scaling factor.
16 Citations
12 Claims
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1. A method in a distortion calculator computer for estimating distortion for an inter-coded image, comprising:
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accessing with the distortion calculator computer an average channel distortion estimated for a previously coded image; and calculating with the distortion calculator computer an average channel distortion for the inter-coded image as said average channel distortion estimated for the previously coded image scaled by a scaling factor (1-P)(a(1−
β
)+β
)+hP, where P represents a packet loss rate, β
represents an intra rate, a is a parameter associated with inter-prediction, c is a parameter associated with intra-prediction, and h is a parameter associated with concealment,where; the inter-coded image is encoded with inter-prediction and temporal concealment with non-integer motion vectors, and without intra-prediction and deblocking filtering, the inter-coded image is encoded with inter-prediction and temporal concealment with non-integer motion vectors, with intra-prediction, and without deblocking filtering, or the inter-coded image is encoded with inter-prediction and temporal concealment with non-integer motion vectors, and with intra-prediction and deblocking filtering. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An apparatus for estimating distortion for an inter-coded image, comprising:
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a distortion calculator computer for accessing an average channel distortion estimated for a previously coded image and for calculating an average channel distortion for the inter-coded image as said average channel distortion estimated for the previously coded image scaled by a scaling factor (1−
P)(a(1−
β
)+cβ
)+hP, where P represents a packet loss rate, β
represents an intra rate, a is a parameter associated with inter-prediction, c is a parameter associated with intra-prediction, and h is a parameter associated with concealment,where; the inter-coded image is encoded with inter-prediction and temporal concealment with non-integer motion vectors, and without intra-prediction and deblocking filtering, the inter-coded image is encoded with inter-prediction and temporal concealment with non-integer motion vectors, with intra-prediction, and without deblocking filtering, or the inter-coded image is encoded with inter-prediction and temporal concealment with non-integer motion vectors, and with intra-prediction and deblocking filtering. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification