Python Wand scale()用法及代碼示例

scale()函數是Python Wand ImageMagick庫中的內置函數，用於通過按給定的列和行縮放每個像素值來更改圖像大小。

用法：

scale(columns, rows)

參數：該函數接受上麵提到的和下麵定義的兩個參數：

columns:此參數存儲列數以水平縮放圖像。以像素為單位。
rows:此參數存儲用於垂直縮放圖像的列數。以像素為單位。

返回值：此函數返回Wand ImageMagick對象。

原始圖片：

範例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 scale:
        # Invoke scale function with threshold as 0.8 
        scale.scale(200, 100) 
        # Save the image 
        scale.save(filename ='scale1.jpg')

輸出：

範例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 scale function method with threshold 0.6 
        pic.scale(50, 100) 
        # Save the image  
        pic.save(filename ='scale2.jpg')

輸出：

相關用法

注：本文由純淨天空篩選整理自sarthak_ishu11大神的英文原創作品 Wand scale() function – Python。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。