Python – Wand 中的 distort() 方法

ImageMagick 通过对用户提供的参数应用各种转换，提供了几种扭曲图像的方法。在 Wand 中，使用了distort()方法，并遵循一个基本函数。

句法 ：

wand.image.distort(method, arguments, best_fit)

参数 ：

Parameter	Input Type	Description
method	basestring	Black point, as a percentage of the system’s quantum range. Defaults to 0..
arguments	collections.abc.Sequence	Distortion method name from DISTORTION_METHODS.
best_fit	bool	Attempt to resize resulting image fit distortion. Defaults False.

以下是失真方法：

Distortion Method	Description
‘undefined’	default Distortion Method
‘affine’	parallel type of distortion.
‘affine_projection’	kind of 3 parallelogram projection.
‘scale_rotate_translate’	transformation distortion
‘perspective’	3 dimensional outwards projection distortion.
‘perspective_projection’	creates a away perspective.
‘bilinear_forward’	based on bilinear equation.
‘bilinear_reverse’	based on reverse bilinear equation.
‘polynomial’	based on polynomial.
‘arc’	creates a circular curve of image.
‘polar’	creates a polar distortion effect.
‘depolar’	creates a depolar distortion effect.
‘cylinder_2_plane’	creates a cylinder to plane distortion effect.
‘plane_2_cylinder’	creates a plane to cylinder distortion effect.
‘barrel’	creates outwards bump on 2d image.
‘barrel_inverse’	creates inwards bump on 2d image.
‘resize’	resize distortion image.
‘sentinel’	creates sentinel image distortion.

源图像：

代码示例 1：

Python3

# Import Image from wand.image module
from wand.image import Image
 
# Read image using Image function
with Image(filename ="gog.png") as img:
    img.distort('arc', (45, ))
    img.save(filename ='gogdistort1.png')

输出图像：

代码示例 2：
将 DISTORTION_METHOD 更改为“透视”。

Python3

# Import Image from wand.image module
from wand.image import Image
 
# Read image using Image function
with Image(filename ="gog.png") as img:
    arguments = (0, 0, 20, 60,
                 90, 0, 70, 63,
                 0, 90, 5, 83,
                 90, 90, 85, 88)
    img.distort('perspective', arguments)
    img.save(filename ='gogdistort.png')

输出图像：