Prediction method, apparatus, and medium for video encoder
First Claim
1. A prediction method, comprising:
- calculating an average of intra-prediction costs or an average of inter-prediction costs of macroblocks of a received picture by encoding the received picture using intra-prediction and/or inter-prediction based on a type of the received picture;
calculating a threshold value based on the average of the intra-predication costs or the average of the inter-predication costs; and
determining whether to perform intra-prediction on a subsequent picture based on the calculated threshold value.
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Abstract
A prediction method, apparatus, and medium including computer readable code, for calculating an average of intra-prediction costs or an average of inter-prediction costs of macroblocks of a received picture by encoding the received picture using an intra-prediction and/or inter-prediction in consideration of a type of the received picture, calculating a threshold value using the calculated average of intra-predication costs and/or inter-predication costs, and determining whether to perform intra-prediction on a subsequent picture based on the calculated threshold value. Accordingly, it is possible to considerably reduce the amount of computation that conventionally was required to encode a picture, without any deterioration in the encoding performance, by considerably reducing the number of macroblocks that need to undergo intra-prediction.
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Citations
18 Claims
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1. A prediction method, comprising:
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calculating an average of intra-prediction costs or an average of inter-prediction costs of macroblocks of a received picture by encoding the received picture using intra-prediction and/or inter-prediction based on a type of the received picture;
calculating a threshold value based on the average of the intra-predication costs or the average of the inter-predication costs; and
determining whether to perform intra-prediction on a subsequent picture based on the calculated threshold value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 17)
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9. A prediction apparatus, comprising:
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an encoding unit calculating an average of intra-prediction costs or an average of inter-prediction costs of macroblocks of a received picture by encoding the received picture using intra-prediction and/or inter-prediction in consideration of a type of the received picture;
a threshold value calculation unit calculating a threshold value using the calculated average of intra-predication costs or inter-prediction costs; and
a determination unit determining whether to perform intra-prediction on a subsequent picture based on the calculated threshold value obtained by the threshold value calculation unit. - View Dependent Claims (10, 11, 12, 13, 14, 15, 18)
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16. A medium comprising computer readable code to control:
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calculating of an average of intra-prediction costs or an average of inter-prediction costs of macroblocks of a received picture by encoding the received picture using intra-prediction and/or inter-prediction in consideration of a type of the received picture;
calculating of a threshold value based on the calculated average; and
determining of whether to perform an intra-prediction on a subsequent picture based on the calculated threshold value.
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Specification