Hist()，将Matlab代码转换为C ++吗? [英] Hist() , conversion of Matlab code to C++ ?

问题描述

大家好，

到底如何我们可以为Matlab函数编写C ++代码
(hist(IpImage)，NumberofBins);

例如:hist(IPImage()，100);

请帮帮我；或清楚地向我解释如何在C ++中实现?

从哪里开始，基本上是灰度图像..


建议.....

Hi people,

How exactly; can we write c++ code for the Matlab function
( hist(IpImage), NumberofBins) ;

Ex: hist(IPImage(),100);

Please help me out; or explain me clearly how to implement in C++?

where to start, basically its a gray scale image..


Suggestions pls .....

推荐答案

对于简单的灰度图像，相对容易生成直方图.当然，确切的代码取决于图像的内存结构.假设您将其保存在一个宽x高字节的缓冲区中，其名称为pf pBuffer.有时，图像线的末尾会被填充；因此变量lineWidth应该包含每个图像行的填充大小.

代码如下所示:

For a simple gray scale image it is relatively easy to produce the histogram. The exact code of course depends on the in-memory structure of your image. Let''s assume you have it in a buffer of width x height bytes by the name pf pBuffer. Sometimes image lines are padded at the end; therefore the variable lineWidth should contain the padded size of each image line.

The code would look like:

unsigned int histo [256];
memset (histo, 0, sizeof histo);
for (int y = 0; y < height; ++y)
{
    BYTE* p = pBuffer + y * lineWidth;
    for (int x = 0; x < width; ++x)
        histo[*p++] += 1;
}

// now the array hist will contain the histogram of the image.

各种不同的图像格式带来了更多的复杂性.但是主体保持不变.

More complexity comes in with the variety of different image formats. But the principal stays the same.

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