Webb首先:plt.plot ()不是用来画图的,这是用来画曲线的 PIL.open ()不是显示图片,二十读取,对应得是cv2.imread (),可以参考前面得本专栏前面的文章 一:cv2.imshow () :1:有两个形参,第一个是显示窗口的名称,另一个则是 Mat类型的数据,numpy数据类型 2: 显示的图像数据必须是0~255 参考自: (29条消息) Opencv-python(cv2)图像读取、显示与 … Webb首先:plt.plot()不是用来画图的,这是用来画曲线的 PIL.open ()不是显示图片,二十读取,对应得是cv2.imread(),可以参考前面得本专栏前面的文章 一: cv2.imshow() :1:有 …
cv2.imshow()和plt.imshow()的区别_yuansiming0920的博客 ...
Webb31 dec. 2024 · 23. Why is there a difference in the output image when calling the same image using plt.imshow & cv2.imshow ()? Here is my code: import cv2 import numpy as … WebbI can't explain the behavior of your code right now but you can use the below code to achieve the above behavior. %matplotlib inline from matplotlib import pyplot as plt import cv2 image = cv2.imread ('images/input.jpg') plt.imshow (image) plt.show () Share Improve this answer Follow answered Dec 2, 2024 at 3:39 Puneet Jindal 137 2 10 7 chinese bispham
plt.plot(),plt.imshow(),cv2.imshow(),PIL.open() - 知乎
WebbopenCV: How imshow treat negative values? 根据文档,imshow将这样工作. 如果图像是8位无符号,则按原样显示。. 2.如果图像是16位无符号或32位整数,则像素除以256.即,值范围 [0,255 * 256]被映射到 [0,255]。. 如果图像是32位浮点,则像素值乘以255.即,值范围 [0,1]映射到 [0,255 ... WebbHere's an example of converting a plt.figure () to np.array and show it along camera feed with cv2.imshow. import matplotlib matplotlib.use ('TkAgg') import numpy as np import cv2 import matplotlib.pyplot as plt fig = plt.figure () cap = cv2.VideoCapture (0) x1 = np.linspace (0.0, 5.0) x2 = np.linspace (0.0, 2.0) y1 = np.cos (2 * np.pi * x1 ... Webb14 aug. 2024 · plt.imshow (data, origin= 'lower') 输出结果如下 5. vmin和vmax vmin和vmax参数用于限定数值的范围,只将vmin和vmax之间的值进行映射,用法如下 plt.imshow (data, vmin=- 0.8, vmax= 0.8 ) plt.colorbar () 输出结果如下 6. interpolation interprolation参数控制热图的显示形式,是一个较难理解的参数,同样的数据,不同取值对应的热图形 … chinese bishopstoke