Weight adjusting module and weight adjusting method
A weight adjustment and weighting technology, which is applied to cathode ray tube indicators, instruments, electrical components, etc., can solve problems such as blurring, blurring of the edges of objects in the screen, and image quality degradation, so as to achieve the effect of improving quality and avoiding edge blurring
Active Publication Date: 2008-07-09
VIA TECH INC
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[0007] However, due to the relatively large adjacent pixels in the image (such as the edge of a certain figure, or between the edge of the object in the picture and the background), it is easy to cause the edge of the object in the picture to be blurred or the image is not enough. sharp, resulting in reduced image quality
For example, when a black object is in an image with a white background, the weights used in the prior art will make the processed black object still black, and only the edges of the object will become gray after processing, which will Make the edges of the gray object look blurred between the processed white background and the processed black object
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[0021] The weight adjustment module and its method according to the embodiments of the present invention will be described below with reference to related figures.
[0022] Please refer to FIG. 1 , which is an image scaling device 2 according to an embodiment of the present invention, which is used to scale an image composed of several pixels. The image scaling device 2 includes a weight generation module 21, a weight adjustment module 22 and a weighting module 23, wherein the weight generation module 21, the weight adjustment module 22 and the weighting module 23 can be realized by digital logic circuits, and the weight adjustment module 22 is respectively The weight generating module 21 and the weighting module 23 are connected. The weight generation module 21 firstly generates a first weight value RA and a second weight value RB according to the pixel column number C where the pixel to be generated is located and the scaling ratio S to be generated. Next, the weight adjust...
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This invention provides one weight adjusting module and method, which comprises the following steps: processing absolute values of difference between first pixel value and second pixel value to get one absolute values; then comparing the difference values with several gate values relative to one weight adjusting value; then according to weight values t adjust one first and second weight values; finally outputting one weighed pixel values through adding second pixel values and second pixel weighted product by first pixel value and adjusted first pixel weight.
Description
technical field [0001] The invention relates to a weight adjustment method, in particular to a method and a weight adjustment module for adjusting weight in image scaling technology. Background technique [0002] With the advent of the information and audio-visual era, image processing technology is also developing vigorously. Among them, the image scaling technology is a widely used image processing technology, which can enlarge or reduce an image according to the needs of users for subsequent image display. The methods for enlarging or reducing images in the prior art will be described below. [0003] Generally, an image is composed of multiple pixel columns, each pixel column contains multiple pixels, and each pixel (pixel) can be represented by its pixel value. In the full-color mode, each pixel can be represented by three primary colors of red, green, and blue, so the pixel value of each pixel can store red, green, and blue data with 6 bits respectively. The size of ...
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IPC IPC(8): H04N1/393G09G5/373
Inventor 欧哲华曹盛哲
Owner VIA TECH INC