文章目录
- 1.常用色彩空间
- 2.常用色彩空间之间的转换
- 3.追踪视频/图像中指定颜色区域
- 4.通道分离
- 5.通道合并
- 5.给某一通道赋值
1.常用色彩空间
- RGB
- HSV
H：0——180
S：0——255
V：0——255
- HIS
- YCrCb
- YUV
2.常用色彩空间之间的转换
def color_space_demo(image):
gray = cv.cvtColor(image, cv.COLOR_BGR2GRAY)
cv.imshow("gray",gray)
hsv = cv.cvtColor(image, cv.COLOR_BGR2HSV)
cv.imshow("hsv",hsv)
3.追踪视频/图像中指定颜色区域
def extrace_object_demo():
capture = cv.VideoCapture("D:/......")
while(True):
ret, frame = capture.read()
if ret == False:
break
hsv = cv.cvtColor(frame, cv.COLOR_BGR2HSV)
lower_hsv = np.array([37, 43, 46])
upper_hsv = np.array([77, 255, 255])
mask = cv.inRange(hsv, lowerb=lower_hsv, upperb=upper_hsv)
cv.imshow("video", frame)
cv.imshow("mask", mask)
c = cv.waitkey(40)
if c == 27;
break
4.通道分离
b, g, r = cv.split(src)
cv.imshow("blue", b)
cv.imshow("green",g)
cv.imshow("red", r)
5.通道合并
src = cv.merge(b ,g ,r)
cv.imshow("changed image",src)
5.给某一通道赋值
src[:, :, 2] = 0
cv.imshow("changed image",src)
