OpenCV-Python graphics and image processing column article directory

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Knowledge summary

1. Opencv-python basic knowledge of graphics and image processing
2. OpenCV-Python commonly used image operations: addition, subtraction, multiplication, division and power extraction logarithm and bit operations

Part of the program case

1. PyQt converts and displays Python-OpenCV images to realize video playback with graphical interface
2. OpenCV-Python mouse control implementation case
3. OpenCV image operation + Moviepy realizes video rotation and superposition
4. Moviepy audio and video editing: use mask to achieve video overlay transparency effect

Essay

1. Opencv-python imread, imshow browse image files in the directory
2. Analysis of the transfer method of the image variable img in the OpenCV-Python setMouseCallback callback function
3. Research on the deformation of OpenCV-Python image converted to PyQt image and the problem that the screen cannot be displayed normally
4. OpenCV threshold processing function threshold processing 32-bit color image case
5. Python-OpenCV adaptive threshold image processing uses the adaptiveThreshold function to obtain image contours
6. Opencv image processing learning essay: the meaning of saturate in the help document calculation formula
7. OpenCV-Python image addition operation cv2.add function detailed explanation
8. OpenCV-Python image subtraction operation cv2.subtract function detailed explanation and comparison with matrix subtraction
9. OpenCV-Python image multiplication operation cv2.multiply function detailed and pixel value overflow normalization processing
10. OpenCV-Python image division operation cv2.divide function and image division processing
11. OpenCV-Python image fusion cv2.addWeighted weight addition function detailed explanation
12. OpenCV-Python image bit and operation bitwise_and function detailed explanation
13. Opencv-python image processing learning essay: Why does the cv2.add function add two scalars to return a 4-element two-dimensional array
14. Opencv-python image processing learning essay: the scalar and image channel number in the addition of image and scalar ADD are the same element number understanding

Basic concept

1. What is the scalar Scalar in OpenCV-Python
2. The principle and realization algorithm of image processing gamma correction (gamma γ correction)
3. Explanation of image processing terms: what is PRGBA and Alpha premultiplied (Premultiplied Alpha)
4. Explanation of image processing terms: detailed explanation of basic concepts such as grayscale, hue, saturation, brightness, lightness, alpha channel, HSL, HSV, RGBA, ARGB and PRGBA, and Premultiplied Alpha (Alpha pre-multiplication)
5. Graphic image learning essay: some basic concepts of computer graphics
6. Digital image processing: understand what convolution (filtering), convolution kernel and related reference materials are

OpenCV-Python graphics and image processing column URL : https://blog.csdn.net/laoyuanpython/category_9979286.html

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