Description: Halftones an input gray level image using using Fixed Thresholding, Random Noise Thresholding, Ordered Dithering, Floyd and Steinburg and Stucki Methods. Platform: |
Size: 2048 |
Author:rohit |
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Description: 1.对8位灰度图像进行抖动处理，采用的是有序抖动
2.对24位彩色图像进行单通道处理，分别显示出红，绿，蓝单通道图像
程序在vc6下实现-1. On the 8-bit grayscale image dithering processing, using the ordered dithering 2. On the single-channel 24-bit color image processing, were shown red, green and blue channel image program to achieve in vc6 Platform: |
Size: 4056064 |
Author:李明 |
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Description: （利用GIF_LZW算法实现的）网络图片传输
一、使用TCP协议传输数据。理由：稳定性好。
二、使用字节数据流进行传输，理由：
A:VB的String存在自动Unicode转换问题，影响速度；
B:可以直接发送8位字节数据，不需要使用Base64编码，从而减少了编码时间。
三、使用GIF-LZW压缩算法压缩图像。理由：
A:行程编码、Huffman压缩算法压缩率太低；
B:JPEG压缩算法需要太多位运算，且运算量大（有专门MMX优化算法），不利于VB实现；
C:GIF-LZW压缩算法压缩率较好，且我已想出VB语法下高效GIF-LZW压缩/解压算法。
四、使用“有序抖动”算法进行 色彩量化。理由：“有序抖动”处理的结果具有一定规律性，有助于LZW类算法压缩。-(Using GIF_LZW algorithm) network picture transmission one, use the TCP protocol to transfer data. Reasons: good stability. Second, the use of byte data stream for transmission reasons: A: VB' s String automatic Unicode conversion problem exists, impact speed B: You can directly send 8 bytes of data, do not need to use Base64 encoding, thereby reducing the encoding time. Third, the use of GIF-LZW compression algorithm to compress the image. Rationale: A: run-length encoding, Huffman compression algorithm compression rate is too low : JPEG compression algorithm requires too many bit operations, and the large amount of computation (specifically MMX optimization algorithm), and not conducive to the realization of VB C: GIF-LZW compression algorithm The compression ratio is better, and I have come up with the VB syntax efficient GIF-LZW compression/decompression algorithm. Ordered dithering algorithm for color quantization. The reason: " ordered dithering" the results of trea Platform: |
Size: 133120 |
Author:霍小刘 |
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Description: 有序抖动也是一种常用的半色调技术方法，可以说是最简单的领域处理过程的方
法。它是用一个固定大小的阈值矩阵在原始灰度图像上面一边“移动”，一边比较。如
果原始图像中像素的灰度值大于相应阈值矩阵中的阈值，那么抖动后该像素的值为1 （白
色），否则为0（黑色）。-Ordered dithering is also a common halftoning method, is the simplest way to process the fields. It is a fixed size in the threshold matrix at the side of the raw grayscale image " move" , while comparison. If the gray scale value of the pixel in the original image is larger than the threshold value matrix corresponding to a threshold value, then the dithering of the pixel value of 1 (white), otherwise as 0 (black). Platform: |
Size: 1024 |
Author:郭君 |
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Description: Declarations for ordered dithering.We use 4x4 ordered dither array packed into 32 bits. This array is sufficent for dithering RGB_888 to RGB_565.
Platform: |
Size: 4096 |
Author:ghfongqq |
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Description: 抖动算法分为随机抖动算法和有序抖动算法。随机抖动算法随机产生一组模板方阵数列，随机数的产生期间在图像的最小灰度和最大灰度之间。有序抖动算法是人为地设置一些模板值进行匹配操作，主要有分散性抖动算法(Disperse Dither)和聚集型离散算法(cluster Dith神两种。分散型以Bayer有序抖动算法为代表。后来Ulichenay在以上两种算法的基础上，提出了局部聚集整体分散的抖动算法。(Dithering algorithm is divided into random dithering algorithm and ordered dithering algorithm. The random dithering algorithm randomly generates a set of template square matrix sequences, where the generation of random numbers is between the minimum gray level and the maximum gray level of the image. The ordered dithering algorithm is to manually set up some template values for matching operations. The main algorithms are decentralized dithering algorithm (Disperse Dither) and clustered discrete algorithm (cluster, Dith, and two). The decentralized algorithm is represented by the Bayer ordered dither algorithm. Later, Ulichenay proposed a local aggregation and scatter jitter algorithm based on the above two algorithms.) Platform: |
Size: 955392 |
Author:Corley
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Search - ordered dithering