EmguCV二进制图像!!!!!!!!!!!! [英] EmguCV binary image!!!!!!!!!!!!

问题描述

如何使用EmguCV制作黑白图像
从彩色图像还是灰色图像?

How to use EmguCV to make Black and White image
from colored or gray image ?

推荐答案

您提出了类似的问题，但是如果您想这样做，则是相反的做法，请让我知道，我可以提供帮助.无论如何，要在EMGU中对二​​进制图像进行阈值处理，您都可以简单地使用.ThresholdBinary语法.

对于灰度图像，这很简单:

Hi,

You asked a similar question however it was the opposite way round if you want to do this let me know and I can help. Anyway to threshold to a binary image in EMGU you can simply use .ThresholdBinary syntax.

For a grayscale image this is simple:

OpenFileDialog open = new OpenFileDialog();
open.Filter = "Image Files (*.tif; *.dcm; *.jpg; *.jpeg; *.bmp)|*.tif; *.dcm; *.jpg; *.jpeg; *.bmp";
int threshold_value = 50; //0-255

if (open.ShowDialog() == DialogResult.OK)
{
    Image<Gray,Byte> img = new Image<Gray,Byte>(open.FileName);
    pictureBox1.Image = img.ToBitmap(); //Display if you want
    img = img.ThresholdBinary(new Gray(threshold_value), new Gray(255));
    pictureBox2.Image = img .ToBitmap(); //display results in different picturebox
}

如果您希望保留原始图像，可以随时执行以下操作

You can always do the following if you wish to keep the original image

Image<Gray,Byte> Binary_Image = img.ThresholdBinary(new Gray(threshold_value), new Gray(255));

如果您想稍微玩些东西，可以在表单中添加一个轨迹栏，将最小值设置为0，将最大值设置为255，然后使用此代码.

If you want to play with things a little you can add a trackbar to your form put the minimum to 0 and maximum to 255 and use this code.

private void trackBar1_Scroll(object sender, EventArgs e)
{
    int trackbar = trackBar1.Value;
    label1.Text = trackbar.ToString(); //use a label to display trackbar value
    if (img != null)
    {
        using (Image<Gray,Byte> Gray = img.ThresholdBinary(new Gray(trackbar), new Gray(255)))
        {
            pictureBox2.Image = Gray.ToBitmap();
        }
    }
}

尽管从技术上讲这不是二进制图像，而是1或0，但会产生预期的黑白效果.

对于彩色图像，情况有所不同:

Although this is not technically a binary image as that would be 1 or 0 it will produce the expected black and white effect.

For a colour image things are a little different:

OpenFileDialog open = new OpenFileDialog();
open.Filter = "Image Files (*.tif; *.dcm; *.jpg; *.jpeg; *.bmp)|*.tif; *.dcm; *.jpg; *.jpeg; *.bmp";
int Blue_threshold = 50; //0-255
int Green_threshold = 50; //0-255
int Red_threshold = 50; //0-255

if (open.ShowDialog() == DialogResult.OK)
{
    Image<bgr,Byte> img_colour = new Image<bgr,Byte>(open.FileName);
    pictureBox1.Image = img_colour.ToBitmap(); //Display if you want
    img_colour = img_colour.ThresholdBinary(new Bgr(Blue_threshold, Green_threshold, Red_threshold), new Bgr(255, 255, 255));
    pictureBox2.Image = img_colour.ToBitmap();//display results in different picturebox
}

希望这对您有所帮助，

干杯，
克里斯

I hope this helps you out if you need any help feel free to ask,

Cheers,
Chris

尝试一下 [^ ]

这篇关于EmguCV二进制图像!!!!!!!!!!!!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！