这样的功能通过写代码能实现吗? - V2EX
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northernlights
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这样的功能通过写代码能实现吗?

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  •   northernlights Nov 20, 2018 3350 views
    This topic created in 2745 days ago, the information mentioned may be changed or developed.

    我想编写一个程序识别图片中具备某些特征(比如特定颜色)的区域所在图片中的位置。 比如有下面一张图片: color.png 怎么编写代码识别出图中红色区域的左上角相对于整张图片左上角的位置?谁有这方面的经验,能否说一下实现的思路。

    14 replies    2018-11-20 22:54:19 +08:00
    xivisi
        1
    xivisi  
       Nov 20, 2018
    1、以黑线为边界,x,y 编号
    2、从 0,0 开始,2 重循环检查颜色是不是红的,
    3、检测到红的,输出计数值
    northernlights
        2
    northernlights  
    OP
       Nov 20, 2018
    @xivisi 代码怎么识别颜色?
    kslr
        3
    kslr  
       Nov 20, 2018 via Android
    遍历色彩空间
    kslr
        4
    kslr  
       Nov 20, 2018 via Android
    northernlights
        5
    northernlights  
    OP
       Nov 20, 2018
    @kslr 不太明白,如果颜色是["#FF0000","#FF0897","#000000"]这样的代码中的数组的话直接就遍历了,但是它是一张图片。
    Madcrow
        6
    Madcrow  
       Nov 20, 2018 via Android
    raycool
        7
    raycool  
       Nov 20, 2018
    @northernlights RGB,imread 图片后,颜色就是你说的那样的数组
    expkzb
        9
    expkzb  
       Nov 20, 2018
    这需求按键精灵就行
    iwtbauh
        10
    iwtbauh  
       Nov 20, 2018 via Android
    这需求 shell 脚本就能漂亮的完成
    scriptable network graphics 了解一下
    JerryCha
        11
    JerryCha  
       Nov 20, 2018
    你需要补一补数字图像基础
    wizardoz
        12
    wizardoz  
       Nov 20, 2018
    转成 RGB 模式位图,然后每个像素点就是 3 个字节,纯红色就是 FF 00 00
    你要找图片处理库,基本上都能支持各种格式的图片转成位图
    alvin666
        13
    alvin666  
       Nov 20, 2018 via Android
    用过 python 和 MATLAB 的图像处理包,很简单,读进去就是一个(比如是 100*100 的图片) 100*100 的三位数组,rgb,然后再遍历,判断就完了,很简单
    netsail
        14
    netsail  
       Nov 20, 2018
    12306 图形验证码?
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