锐化使用C＃位图 [英] Sharpen on a Bitmap using C#
本文介绍了锐化使用C＃位图的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我想提出一个锐化滤镜的图像上。我发现用简短的教程网络。
我试着做它在C＃所以这里是我的code。反正，我试图找出为什么它不工作。我不知道如果我做错了什么，如果是，请告诉我怎样做才能让它工作，因为它应该是。谢谢
公共静态位图锐化（位图图像）
{
位图sharpenImage =新位图（image.Width，image.Height）; INT filterWidth = 3;
INT filterHeight = 3;
INT W = image.Width;
INT H = image.Height; 双[，] =过滤器新的双[filterWidth，filterHeight] 过滤[0,0] =过滤[0，1] =过滤[0,2] =过滤[1,0] =滤波器[1，2] =滤波器[2，0] =过滤[2,1] =滤波器[2，2] = -1;
滤波[1,1] = 9; 双因子= 1.0;
双偏压= 0.0; 颜色[，]结果=新的色彩[image.Width，image.Height] 为（中间体X = 0; X＆下;瓦; ++ x）的
{
对于（INT Y = 0; Y＆LT; H ++ Y）
{
双红= 0.0，绿= 0.0，蓝色= 0.0;
色imageColor = image.GetPixel（X，Y）; 对（INT filterX = 0; filterX＆下; filterWidth; filterX ++）
{
对（INT filterY = 0; filterY＆下; filterHeight; filterY ++）
{
INT IMAGEX =（X - filterWidth / 2 + filterX + W）％（重量）;
INT宜美=（Y - filterHeight / 2 + filterY + H）％H;
红色+ = imageColor.R *过滤器[filterX，filterY]
绿色+ = imageColor.G *过滤器[filterX，filterY]
蓝+ = imageColor.B *过滤器[filterX，filterY]
}
INT R = Math.Min（Math.Max（（INT）（因子×红+偏差），0），255）;
INT G = Math.Min（Math.Max（（INT）（*系数+绿色偏差），0），255）;
INT B = Math.Min（Math.Max（（INT）（因子×蓝+偏差），0），255）; 结果[X，Y] = Color.FromArgb（R，G，B）;
}
}
}
的for（int i = 0; I＆LT;瓦; ++ I）
{
对于（INT J = 0; J＆LT; H ++ j）条
{
sharpenImage.SetPixel（I，J，导致[I，J]）;
}
}
返回sharpenImage;
}
解决方案
公共静态位图锐化（位图图像）
{
位图sharpenImage =新位图（image.Width，image.Height）; INT filterWidth = 3;
INT filterHeight = 3;
INT W = image.Width;
INT H = image.Height; 双[，] =过滤器新的双[filterWidth，filterHeight] 过滤[0,0] =过滤[0，1] =过滤[0,2] =过滤[1,0] =滤波器[1，2] =滤波器[2，0] =过滤[2,1] =滤波器[2，2] = -1;
滤波[1,1] = 9; 双因子= 1.0;
双偏压= 0.0; 颜色[，]结果=新的色彩[image.Width，image.Height] 为（中间体X = 0; X＆下;瓦; ++ x）的
{
对于（INT Y = 0; Y＆LT; H ++ Y）
{
双红= 0.0，绿= 0.0，蓝色= 0.0;// ===== [REMOVE线] ======================================= =================
//颜色必须按照过滤器条目被读取，而不是每个图像像素。
色imageColor = image.GetPixel（X，Y）;
// ================================================ =========================== 对（INT filterX = 0; filterX＆下; filterWidth; filterX ++）
{
对（INT filterY = 0; filterY＆下; filterHeight; filterY ++）
{
INT IMAGEX =（X - filterWidth / 2 + filterX + W）％（重量）;
INT宜美=（Y - filterHeight / 2 + filterY + H）％H;// ===== [插入线] ======================================= =================
//此处获取颜色 - 每一次进入fiter和图像像素。
颜色imageColor = image.GetPixel（IMAGEX，宜美）;
// ================================================ =========================== 红色+ = imageColor.R *过滤器[filterX，filterY]
绿色+ = imageColor.G *过滤器[filterX，filterY]
蓝+ = imageColor.B *过滤器[filterX，filterY]
}
INT R = Math.Min（Math.Max（（INT）（因子×红+偏差），0），255）;
INT G = Math.Min（Math.Max（（INT）（*系数+绿色偏差），0），255）;
INT B = Math.Min（Math.Max（（INT）（因子×蓝+偏差），0），255）; 结果[X，Y] = Color.FromArgb（R，G，B）;
}
}
}
的for（int i = 0; I＆LT;瓦; ++ I）
{
对于（INT J = 0; J＆LT; H ++ j）条
{
sharpenImage.SetPixel（I，J，导致[I，J]）;
}
}
返回sharpenImage;
}
I want to put a sharpen filter on an image. I have found a web with short tutorial. I tried to do it in C# so here is my code. Anyway, I tried to find out why it is not working. I do not know if I am doing something wrong, if yes, please advise me what to do to make it work as it should be. Thanks
public static Bitmap sharpen(Bitmap image)
{
Bitmap sharpenImage = new Bitmap(image.Width, image.Height);
int filterWidth = 3;
int filterHeight = 3;
int w = image.Width;
int h = image.Height;
double[,] filter = new double[filterWidth, filterHeight];
filter[0, 0] = filter[0, 1] = filter[0, 2] = filter[1, 0] = filter[1, 2] = filter[2, 0] = filter[2, 1] = filter[2, 2] = -1;
filter[1, 1] = 9;
double factor = 1.0;
double bias = 0.0;
Color[,] result = new Color[image.Width, image.Height];
for (int x = 0; x < w; ++x)
{
for (int y = 0; y < h; ++y)
{
double red = 0.0, green = 0.0, blue = 0.0;
Color imageColor = image.GetPixel(x, y);
for (int filterX = 0; filterX < filterWidth; filterX++)
{
for (int filterY = 0; filterY < filterHeight; filterY++)
{
int imageX = (x - filterWidth / 2 + filterX + w) % w;
int imageY = (y - filterHeight / 2 + filterY + h) % h;
red += imageColor.R * filter[filterX, filterY];
green += imageColor.G * filter[filterX, filterY];
blue += imageColor.B * filter[filterX, filterY];
}
int r = Math.Min(Math.Max((int)(factor * red + bias), 0), 255);
int g = Math.Min(Math.Max((int)(factor * green + bias), 0), 255);
int b = Math.Min(Math.Max((int)(factor * blue + bias), 0), 255);
result[x, y] = Color.FromArgb(r, g, b);
}
}
}
for (int i = 0; i < w; ++i)
{
for (int j = 0; j < h; ++j)
{
sharpenImage.SetPixel(i, j, result[i, j]);
}
}
return sharpenImage;
}
解决方案
public static Bitmap sharpen(Bitmap image)
{
Bitmap sharpenImage = new Bitmap(image.Width, image.Height);
int filterWidth = 3;
int filterHeight = 3;
int w = image.Width;
int h = image.Height;
double[,] filter = new double[filterWidth, filterHeight];
filter[0, 0] = filter[0, 1] = filter[0, 2] = filter[1, 0] = filter[1, 2] = filter[2, 0] = filter[2, 1] = filter[2, 2] = -1;
filter[1, 1] = 9;
double factor = 1.0;
double bias = 0.0;
Color[,] result = new Color[image.Width, image.Height];
for (int x = 0; x < w; ++x)
{
for (int y = 0; y < h; ++y)
{
double red = 0.0, green = 0.0, blue = 0.0;
//=====[REMOVE LINES]========================================================
// Color must be read per filter entry, not per image pixel.
Color imageColor = image.GetPixel(x, y);
//===========================================================================
for (int filterX = 0; filterX < filterWidth; filterX++)
{
for (int filterY = 0; filterY < filterHeight; filterY++)
{
int imageX = (x - filterWidth / 2 + filterX + w) % w;
int imageY = (y - filterHeight / 2 + filterY + h) % h;
//=====[INSERT LINES]========================================================
// Get the color here - once per fiter entry and image pixel.
Color imageColor = image.GetPixel(imageX, imageY);
//===========================================================================
red += imageColor.R * filter[filterX, filterY];
green += imageColor.G * filter[filterX, filterY];
blue += imageColor.B * filter[filterX, filterY];
}
int r = Math.Min(Math.Max((int)(factor * red + bias), 0), 255);
int g = Math.Min(Math.Max((int)(factor * green + bias), 0), 255);
int b = Math.Min(Math.Max((int)(factor * blue + bias), 0), 255);
result[x, y] = Color.FromArgb(r, g, b);
}
}
}
for (int i = 0; i < w; ++i)
{
for (int j = 0; j < h; ++j)
{
sharpenImage.SetPixel(i, j, result[i, j]);
}
}
return sharpenImage;
}
这篇关于锐化使用C＃位图的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
查看全文
