At present，The latest verion of offical OpenCV is 4.5.2。 In this blog, I introduce how to compile OpenCV from source code and enable GPU/CUDA support - GPU: Tesla V100 - CUDA: 11.0 - CUDA Capability: 7.0 (corresponding to GPU Tesla V100) - OS: Ubuntu 20.04 # I…

  cv2.imread()函数可以读取图像，第一个参数为读取的文件路径，第二个为读取的模式。无论那种方式模式，imread()都会删除所有的alpha通道信息（透明的）。 IMREAD_COLOR : Loads a color image. Any transparency of image will be neglected. It is thedefault flag. = 4 IMREAD_GRAYSCALE : Loads image in grayscale mode = 0 IMREAD_…