Method for transcoding compressed image bit stream
First Claim
Patent Images
1. A method of transcoding an input image bit stream into an output image bit stream having a different bit rate, the method comprising:
- determining a cut area of an input image to be removed;
cutting the input image according to the cut area; and
generating an output image of the output image bit stream corresponding to the input image after the cutting.
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Abstract
A method of transcoding an input image bit stream into an output image bit stream having a different bit rate. The method includes determining a cut area of an input image to be removed, cutting the input image according to the cut area, and generating an output image of the output image bit stream corresponding to the input image after the cutting. In the present method, image areas of not interest to a user are removed so as to lower the bit rate. In addition, removed bits are reassigned to concern areas so as to improve a picture quality.
32 Citations
30 Claims
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1. A method of transcoding an input image bit stream into an output image bit stream having a different bit rate, the method comprising:
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determining a cut area of an input image to be removed;
cutting the input image according to the cut area; and
generating an output image of the output image bit stream corresponding to the input image after the cutting. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of changing a bit rate of a compressing image bit stream, in which the bit rate of an input image bit stream is changed to an output image bit stream having a desired bit rate, the method comprising:
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determining a desired image area of an output image;
obtaining a remaining image by cutting an input image according to the desired image area; and
generating the output image of the output image bit stream corresponding to the remaining image. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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21. A method of obtaining a desired bit rate of a compressed image bit stream comprising:
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obtaining a remaining image area by determining a desired image area and cutting an input image of an input image bit stream according to the desired image area; and
generating an output image of an output image bit stream corresponding to the remaining image. - View Dependent Claims (22, 23)
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24. A computer readable medium encoded with operating instructions for implementing a method of changing a bit rate of a compressing image bit stream performed by a computer, in which the bit rate of an input image bit stream is changed to an output image bit stream having a desired bit rate, the method comprising:
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determining a desired image area of an output image of the output image bit stream;
obtaining a remaining image by cutting an input image of the input image bit stream according to the desired image area; and
generating the output image of the output image bit stream corresponding to the remaining image. - View Dependent Claims (25, 26, 27, 28, 29, 30)
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Specification