从图像获取一个配色方案 [英] Getting a Colour Scheme from an Image

问题描述

我要开发像一个这里功能的基本工具。我将采取一些网页的截图，并从那里我希望在前五名最流行的色彩，并从那里不知何故决定颜色是否是一个很好的搭配。

I want to develop a basic tool like the one featured here. I will be taking screenshots of a number of web pages and from there I wish to take the top five most popular colours and from there somehow decide whether the colours are a good match.

我想用C＃这个工具和一些研究之后，我发现lockbits。我的第一个想法是拍摄图像，然后让每个像素的颜色，但我不确定这是否会给我我想要的结果，以及如何使最流行的颜色六个名单。

I want to write this tool in C# and after a bit of research I discovered lockbits. My first idea was to take an image and then get the colour of each pixel, but I am unsure as to whether this will give me the results I desire and how to make six lists of the most popular colours.

在这里任何人都可以提供意见，以我将如何创建一个程序做类似上述程序的东西，这将图像中，将选择图像中使用的前五种颜色？

Can anyone here provide advice as to how I would create a program to do something similar to the program above, that will take in an image and will select the top five colours used in the image?

推荐答案

嗯..使用缩略图（16×16 32×32等），并从中选择颜色像

Well.. Use a thumbnail image (16x16, 32x32 etc) and select from it the colors like

更新的代码：

    private void button1_Click(object sender, EventArgs e)
    {
        int thumbSize = 32;
        Dictionary<Color, int> colors = new Dictionary<Color, int>();

        Bitmap thumbBmp = 
            new Bitmap(pictureBox1.BackgroundImage.GetThumbnailImage(
                thumbSize, thumbSize, ThumbnailCallback, IntPtr.Zero));

        //just for test
        pictureBox2.Image = thumbBmp;            

        for (int i = 0; i < thumbSize; i++)
        {
            for (int j = 0; j < thumbSize; j++)
            {
                Color col = thumbBmp.GetPixel(i, j);
                if (colors.ContainsKey(col))
                    colors[col]++;
                else
                    colors.Add(col, 1);
            }                
        }

        List<KeyValuePair<Color, int>> keyValueList = 
            new List<KeyValuePair<Color, int>>(colors);

        keyValueList.Sort(
            delegate(KeyValuePair<Color, int> firstPair,
            KeyValuePair<Color, int> nextPair)
            {
                return nextPair.Value.CompareTo(firstPair.Value);
            });

        string top10Colors = "";
        for (int i = 0; i < 10; i++)
        {
            top10Colors += string.Format("\n {0}. {1} > {2}",
                i, keyValueList[i].Key.ToString(), keyValueList[i].Value);
            flowLayoutPanel1.Controls[i].BackColor = keyValueList[i].Key;
        }
        MessageBox.Show("Top 10 Colors: " + top10Colors);
    }

    public bool ThumbnailCallback() { return false; }

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