Image processing device and method
First Claim
1. An image processing method for processing at least one image data, comprising:
- sampling sub-image data to generate a first image processing signal;
discrete cosine transforming the first image processing signal to generate a second image processing signal;
quantizing the second image processing signal according to a quantization table so as to generate a third image processing signal;
zig-zag scanning the third image processing signal to generate a fourth image processing signal;
Huffman coding the fourth image processing signal to generate an output image signal; and
adjusting a cut point of a next fourth image processing signal according to the size of the fourth image processing signal so as to control the size of a next output image signal, wherein the fourth image processing signal following the cut point is zero-valued to control the size of the fourth image processing signal.
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Accused Products
Abstract
An image processing device including a camera, a discrete signal processor (DSP) and an output device is disclosed. The camera provides image data for the DSP to process. The DSP samples sub-image data to generate a first image processing signal, discrete cosine transforms the first image processing signal to generate a second image processing signal, uses a quantization table to quantize the second image processing signal to generate a third image processing signal, zig-zag scans the third image processing signal to generate a fourth image processing signal, and Huffman codes the fourth image processing signal to generate an output image signal. The DSP adjusts a cut point of a next fourth image processing signal according to the size of the fourth image processing signal so as to control the size of a next output image signal. The output device outputs the output image signal.
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Citations
15 Claims
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1. An image processing method for processing at least one image data, comprising:
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sampling sub-image data to generate a first image processing signal; discrete cosine transforming the first image processing signal to generate a second image processing signal; quantizing the second image processing signal according to a quantization table so as to generate a third image processing signal; zig-zag scanning the third image processing signal to generate a fourth image processing signal; Huffman coding the fourth image processing signal to generate an output image signal; and adjusting a cut point of a next fourth image processing signal according to the size of the fourth image processing signal so as to control the size of a next output image signal, wherein the fourth image processing signal following the cut point is zero-valued to control the size of the fourth image processing signal. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An image processing device, comprising:
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a camera for providing at least one image data; a digital signal processor for processing the image data, wherein the digital signal processor samples sub-image data to generate a first image processing signal, discrete cosine transforms the first image processing signal to generate a second image processing signal, uses a quantization table to quantize the second image processing signal to generate a third image processing signal, Zig-Zag scans the third image processing signal to generate a fourth image processing signal, Huffman codes the fourth image processing signal to generate an output image signal, and adjusts a cut point of a next fourth image processing signal according to the size of the fourth image processing signal so as to control the size of a next output image signal, wherein the fourth image processing signal following the cut point is zero-valued to control the size of the fourth image processing signal; and an output device for outputting the output image signal. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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15. An image processing method for processing at least one image data, comprising:
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quantizing a first image signal of the image data according to a quantization table so as to generate a second image signal; zig-zag scanning the second image signal to generate a third image signal; Huffman coding the third image signal to generate an output image signal; adjusting a cut point of a next third image signal according to the size of the third image signal so as to control the size of a next output image signal, wherein the third image signal following the cut point is zero-valued to control the size of the third image signal; and adjusting the quantization table of the next image data according to the cut point from the image data, wherein a coefficient is provided for multiplying the quantization table to adjust the quantization table of the next image data.
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Specification