OpenCV空二进制图像C ++ [英] OpenCV Empty Binary Image C++

问题描述

我想在OpenCV中创建一个二进制图像，所有的值都初始化为0.我想要它的尺寸为2000x800。

I'm looking to create a binary image in OpenCV where all the values are initialised to 0. I want it to have dimensions 2000x800.

到目前为止，我有：

Mat canvas(2000, 800, 1)

但我想要的是，每个像素的值只能是零或一个。

But I want it so that the values of each pixel can only be a zero or a one.

推荐答案

OpenCV不支持位域，即深度为1位的Mat。这里有正确的推理;对位域的操作明显较慢，因为位不是硬件的固有操作类型。因此，Getpixel和setpixel需要额外的操作。

OpenCV does not support bitfields i.e. Mat's of depth 1 bit. There is sound reasoning in this; operating on bitfields is markedly slower because a bit is not an intrinsic operating type for the hardware. Getpixel and setpixel would therefore need extra operations.

Mat canvas = Mat::zeros(800,600,CV_8UC1);

将创建深度为8位的零初始化图像; 7位将被浪费。

Will create a zero-initialized image of depth 8 bits; 7 bits will be wasted.

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