Method of decoding a digital video sequence and related apparatus
AssigneeMediatek Incorporation
InventorChi-Cheng Ju
Life of this patent
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Abstract
A method for decoding a digital video sequence includes decoding a first picture in the sequence; reducing a data size of the decoded first picture by vector quantizing at least one component of the first picture, the quantized component selected from the luminance and chrominance components of the first picture; storing a reduced data size representation of the decoded first picture to a memory; reading a region of interest of the reduced data size representation of the decoded first picture; and decoding a region of interest of a second picture in the sequence according to the region of interest of the reduced data size representation of the decoded first picture.
Claims34
A method of decoding a digital video sequence, the method comprising:
- decoding a first picture in the sequence;
- reducing a data size of the decoded first picture by vector quantizing at least one component of the first picture, the quantized component selected from the luminance and chrominance components of the first picture;
- storing a reduced data size representation of the decoded first picture to a memory;
- reading a region of interest of the reduced data size representation of the decoded first picture;
- and
- decoding a region of interest of a second picture in the sequence according to the region of interest of the reduced data size representation of the decoded first picture.
A method of decoding a digital video sequence, the method comprising:
- decoding a first picture in the sequence;
- adding a randomly generated value to at least one component of the decoded first picture;
- reducing a data size of the decoded first picture by quantizing the at least one component of the first picture, the quantized component selected from the luminance and chrominance components of the first picture;
- storing a reduced data size representation of the decoded first picture to a memory;
- inverse quantizing a region of interest of the reduced data size representation of the decoded first picture;
- and
- decoding a region of interest of a second picture in the sequence according to the region of interest of the reduced data size representation of the decoded first picture.
A method of decoding a digital video sequence, the method comprising:
- decoding a first picture in the sequence;
- reducing a data size of the decoded first picture by downsampling at least one component of the first picture and then quantizing the at least one downsampled component of the first picture, the quantized component selected from the luminance and chrominance components of the first picture;
- storing a reduced data size representation of the decoded first picture to a memory;
- reading a region of interest of the reduced data size representation of the decoded first picture;
- and
- decoding a region of interest of a second picture in the sequence according to the region of interest of the reduced data size representation of the decoded first picture.
An apparatus for decoding a digital video sequence, comprising:
- a first decoding means for decoding a first picture in the sequence;
- a data size reducing means for reducing a data size of the decoded first picture by vector quantizing at least one component of the first picture, the quantized component selected from the luminance and chrominance components of the first picture;
- a memory for storing a reduced data size representation of the decoded first picture;
- a means for reading a region of interest of the reduced data size representation of the decoded first picture;
- and
- a second decoding means for decoding a region of interest of a second picture in the sequence according to the region of interest of the reduced data size representation of the decoded first picture.
An apparatus for decoding a digital video sequence, comprising:
- a first decoding means for decoding a first picture in the sequence;
- a data size reducing means for adding a randomly generated value to at least one component of the decoded first picture, and for reducing a data size of the decoded first picture by quantizing the at least one component of the first picture, the quantized component selected from the luminance and chrominance components of the first picture;
- a memory for storing a reduced data size representation of the decoded first picture;
- an inverse quantizer for inverse quantizing a region of interest of the reduced data size representation of the decoded first picture;
- and
- a second decoding means for decoding a region of interest of a second picture in the sequence according to the region of interest of the reduced data size representation of the decoded first picture.
An apparatus for decoding a digital video sequence, comprising:
- a first decoding means for decoding a first picture in the sequence;
- a data size reducing means for reducing a data size of the decoded first picture by downsampling at least one component of the first picture and then quantizing the at least one downsampled component of the first picture, the quantized component selected from the luminance and chrominance components of the first picture;
- a memory for storing a reduced data size representation of the decoded first picture;
- a means for reading a region of interest of the reduced data size representation of the decoded first picture;
- and
- a second decoding means for decoding a region of interest of a second picture in the sequence according to the region of interest of the reduced data size representation of the decoded first picture.
Dependencies are inferred from the claim text.