Downloading image graphics with accelerated text character and line art creation
First Claim
1. A method of enabling to create an image, the method comprising:
- supplying a first image representation having a spatially low resolution and comprising first pixels, each with a first pixel value of a first pixel depth;
supplying a second image representation having a spatially high resolution and comprising second pixels, each with a second pixel value of a second pixel depth substantially smaller than the first pixel depth; and
combining the first and second representations, the combining comprising;
assigning a further pixel value to a specific first pixel, spatially corresponding with a specific second pixel, under control of a specific second pixel value of the specific second pixel.
2 Assignments
0 Petitions
Accused Products
Abstract
An image is transferred from a sender to a receiver. The image is progressively re-created at a display of the receiver. First, a low-resolution full-color representation of the image is transferred. Then, a full-resolution limited-color representation of the image is sent. The pixel values of the full-resolution representation typically represent alpha-numerical characters or edges of features. The representations are combined to create a version of the image by modifying the pixels of first representation under control of the limited-color content of the spatially corresponding pixel of the second representation. The legibility of the combined image is achieved considerably faster than with conventional techniques.
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Citations
13 Claims
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1. A method of enabling to create an image, the method comprising:
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supplying a first image representation having a spatially low resolution and comprising first pixels, each with a first pixel value of a first pixel depth; supplying a second image representation having a spatially high resolution and comprising second pixels, each with a second pixel value of a second pixel depth substantially smaller than the first pixel depth; and combining the first and second representations, the combining comprising; assigning a further pixel value to a specific first pixel, spatially corresponding with a specific second pixel, under control of a specific second pixel value of the specific second pixel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An image processing system for creating an image, the system comprising:
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an input; a memory connected to the input for receiving a first image representation having a spatially low resolution and comprising first pixels, each with a first pixel value of a first pixel depth; a decoder coupled to the input and to the memory for receiving a second image representation having a spatially high resolution and comprising second pixels, each with a second pixel value of a second pixel depth substantially smaller than the first pixel depth, and for combining the first and second representations by assigning a further pixel value to a specific first pixel, spatially corresponding with a specific second pixel, under control of a specific second pixel value of the specific second pixel. - View Dependent Claims (11)
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12. An image processing system comprising:
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an input for receiving an input image; an encoder connected to the input for creating a first image representation of the input image, the first image representation having a spatially low resolution and comprising first pixels, each with a first pixel value of a first pixel depth, and for creating a second image representation of the input image, the second image representation having a spatially high resolution and comprising second pixels, each with a second pixel value of a second pixel depth substantially smaller than the first pixel depth; and an output for supplying the first and second image representations.
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13. A computer-readable storage device comprising:
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a first image representation of an image, the first image representation having a spatially low resolution and comprising first pixels, each with a first pixel value of a first pixel depth; a second image representation of the image, the second image representation having a spatially high resolution and comprising second pixels, each with a second pixel value of a second pixel depth substantially smaller than the first pixel depth.
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Specification