如何将CV_8UC3 Mat转换为CV_32FC3? [英] How do I convert CV_8UC3 Mat to CV_32FC3?
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问题描述
是否可以在不直接访问原始缓冲区的情况下将CV_8UC3 Mat转换为CV_32FC3 Mat?我尝试了Mat::convertTo(newImage, CV_32FC3, 1.0);，但是颜色最终还是错误的.谢谢.
Is there a way to convert from CV_8UC3 Mat to CV_32FC3 Mat without directly accessing the raw buffer? I tried Mat::convertTo(newImage, CV_32FC3, 1.0); but the colors end up wrong. Thanks.
推荐答案
约定是，对于CV_8UC3类型，像素值范围是0到255，对于CV_32FC3类型，像素值范围是0.0到1.0.因此，您需要使用1/255.0的缩放比例，而不是1.0:
The convention is, that for the type CV_8UC3 the pixels values range from 0 to 255, and for type CV_32FC3 from 0.0 to 1.0. Thus you need to use a scaling factor of 1/255.0 instead of 1.0:
Mat::convertTo(newImage, CV_32FC3, 1/255.0);
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