python-3.x - opencv与skimage之间的HSV色彩空间转换
问题描述
我在比较 skImage HSV 颜色空间和 OpenCV hsv 颜色空间转换方法之间的差异,我发现了以下我不明白的差异:
from PIL import Image
from skimage import io
import numpy as np
import cv2
image = PIL.Image.open("112.jpg")
data = np.asarray(image) #Feeding the same RGB array
y1=cv2.cvtColor(np.float32(data),cv2.COLOR_RGB2HSV)
y1 = y1.astype(np.uint8)
y2= color.rgb2hsv(data) #skimage conversion
我使用 PIL 来确保输入 RGB 阵列。在这里,当我打印图像时,我得到了以下输出。
y1
>>> array([[[ 52, 0, 252],
[ 52, 0, 252],
[ 52, 0, 252],
...,
[ 59, 0, 186],
[ 59, 0, 186],
[ 59, 0, 186]],
[[ 52, 0, 252],
[ 52, 0, 252],
[ 52, 0, 252],
...,
[ 59, 0, 186],
[ 59, 0, 186],
[ 59, 0, 186]],
[[ 52, 0, 252],
[ 52, 0, 252],
[ 52, 0, 252],
...,
[ 59, 0, 187],
[ 59, 0, 187],
[ 59, 0, 187]],
...,
y2
>>> array([[[0.14465409, 0.21031746, 0.98823529],
[0.14465409, 0.21031746, 0.98823529],
[0.14465409, 0.21031746, 0.98823529],
...,
[0.16515152, 0.59139785, 0.72941176],
[0.16515152, 0.59139785, 0.72941176],
[0.16515152, 0.59139785, 0.72941176]],
[[0.14465409, 0.21031746, 0.98823529],
[0.14465409, 0.21031746, 0.98823529],
[0.14465409, 0.21031746, 0.98823529],
...,
[0.16515152, 0.59139785, 0.72941176],
[0.16515152, 0.59139785, 0.72941176],
[0.16515152, 0.59139785, 0.72941176]],
[[0.14465409, 0.21031746, 0.98823529],
[0.14465409, 0.21031746, 0.98823529],
[0.14465409, 0.21031746, 0.98823529],
...,
[0.16515152, 0.58823529, 0.73333333],
[0.16515152, 0.58823529, 0.73333333],
[0.16515152, 0.58823529, 0.73333333]],
...,
为什么我的 y1 和 y2 数组不同?skimage 和 opencv 对于相同的色彩空间是否遵循不同的转换公式?
将 RGB 图像转换为 HSV 图像的标准和最常用的方法是:“cvtColor(....RGB2HSV) -cv2”或“rgbtohsv() -skimage”?
先感谢您 :)