Python Wand mean_shift()用法及代码示例

mean_shift()函数是Python Wand ImageMagick库中的内置函数，该函数用于通过比较颜色距离内的相邻像素并替换为平均值来重新计算像素值。

用法：

mean_shift(width, height, color_distance)

参数：该函数接受上面提到的和下面定义的两个参数：

width:此参数用于存储邻居窗口的宽度(以像素为单位)。
height:此参数用于存储邻域窗口的高度(以像素为单位)。
color_distance:此参数用于存储此颜色距离内的像素值。

返回值：此函数返回Wand ImageMagick对象。

原始图片：

范例1：

# Import library from Image  
from wand.image import Image 
  
# Import the image 
with Image(filename ='../geeksforgeeks.png') as image:
    # Clone the image in order to process 
    with image.clone() as mean_shift:
        # Invoke mean_shift function with width as 30 and height as 10  
        # and color_distance as 0.2 
        mean_shift.mean_shift(30, 10, 0.2) 
        # Save the image 
        mean_shift.save(filename ='mean_shift1.jpg')

输出：

范例2：

# Import libraries from the wand   
from wand.image import Image 
from wand.drawing import Drawing 
from wand.color import Color 
  
with Drawing() as draw:
    # Set Stroke color the circle to black 
    draw.stroke_color = Color('black') 
    # Set Width of the circlw to 2  
    draw.stroke_width = 1
    # Set the fill color to 'White (# FFFFFF)' 
    draw.fill_color = Color('white') 
  
    # Invoke Circle function with center at 50, 50 and radius 25 
    draw.circle((200, 200), # Center point 
                (100, 100)) # Perimeter point 
    # Set the font style 
    draw.font = '../Helvetica.ttf'
    # Set the font size  
    draw.font_size = 30
      
    with Image(width = 400, height = 400, background = Color('# 45ff33')) as pic:
        # Set the text and its location 
        draw.text(int(pic.width / 3), int(pic.height / 2), 'GeeksForGeeks !') 
        # Draw the picture 
        draw(pic) 
        # Invoke mean_shift function with width as 20, height as 30 and color_distance as 0.6 
        pic.mean_shift(20, 30, 0.6) 
        # Save the image  
        pic.save(filename ='mean_shift2.jpg')

输出：

相关用法

注：本文由纯净天空筛选整理自sarthak_ishu11大神的英文原创作品 Wand mean_shift() function – Python。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。