Halcon-灰度变换处理（灰度扩展，对数，指数）

缺乏、安全感 2023-01-10 13:20 227阅读 0赞

## 线性灰度变换 ##

read_image (Image, 'claudia')
    dev_close_window ()
    get_image_size (Image, Width, Height)
    dev_open_window_fit_size (0, 0, Width, Width, -1, -1, WindowHandle)
    dev_display (Image)
    * 灰度处理
    rgb1_to_gray (Image, GrayImage)
    dump_window (WindowHandle, 'bmp', 'D:灰度图像')
    
    * 图像取反
    invert_image (GrayImage, ImageInvert)
    dump_window (WindowHandle, 'bmp', 'D:取反图像')
    
    *增加对比度
    emphasize (GrayImage, ImageEmphasize, Width, Height, 1)
    dump_window (WindowHandle, 'bmp', 'D:增加对比度图像')
    
    *减小对比度
    scale_image (GrayImage, ImageScaled, 0.5, 0)
    dump_window (WindowHandle, 'bmp', 'D:减小对比度图像')
    
    *增加亮度
    scale_image (GrayImage, ImageScaled1, 1, 80)
    dump_window (WindowHandle, 'bmp', 'D:增加亮度图像')
    
    *减小亮度
    scale_image (GrayImage, ImageScaled1, 1, -80)
    dump_window (WindowHandle, 'bmp', 'D:减小亮度图像')

**函数：  
invert\_image (GrayImage, ImageInvert)  
emphasize (GrayImage, ImageEmphasize, Width, Height, 1)  
scale\_image (GrayImage, ImageScaled, 0.5, 0)**

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NTY0NTI4MQ_size_16_color_FFFFFF_t_70_pic_center]

## 灰度线性变换 ##

* 分段线性灰度变换
    read_image (Image, 'claudia')
    write_image (Image, 'tiff', 0, 'D:1/original')
    dev_close_window ()
    get_image_size (Image, Width, Height)
    dev_open_window_fit_size (0, 0, Width, Width, -1, -1, WindowHandle)
    dev_display (Image)
    min_max_gray (Image, Image, 0, Min, Max, Range)
    scale_image_max (Image, ImageScaledMax)
    write_image (ImageScaledMax, 'tiff', 0, 'D:1/result')

**函数：  
min\_max\_gray (Image, Image, 0, Min, Max, Range)**

![在这里插入图片描述][20210124135938850.jpg_pic_center]

## 灰度增强（对数和指数） ##

*对数变换和指数变换
    read_image (Image, 'ic')
    write_image (Image, 'tiff', 0, 'D:1/original_ic')
    dev_close_window ()
    get_image_size (Image, Width, Height)
    dev_open_window_fit_size (0, 0, Width, Width, -1, -1, WindowHandle)
    rgb1_to_gray (Image, GrayImage)
    dev_display (Image)
    
    *对数
    log_image (GrayImage, LogImage, 'e')
    dump_window (WindowHandle, 'bmp', 'D:1/result_ic')
    
    *指数
    pow_image (GrayImage, PowImage, 2)
    dump_window (WindowHandle, 'bmp', 'D:1/result_ic2')
    pow_image (GrayImage, PowImage, 0.5)
    dump_window (WindowHandle, 'bmp', 'D:1/result_ic0.5')

**函数：  
log\_image (GrayImage, LogImage, ‘e’)  
pow\_image (GrayImage, PowImage, 2)**

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NTY0NTI4MQ_size_16_color_FFFFFF_t_70_pic_center 1]

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[20210124135938850.jpg_pic_center]: https://img-blog.csdnimg.cn/20210124135938850.jpg#pic_center
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NTY0NTI4MQ_size_16_color_FFFFFF_t_70_pic_center 1]: https://img-blog.csdnimg.cn/2021012414005876.jpg?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NTY0NTI4MQ==,size_16,color_FFFFFF,t_70#pic_center