我正在尝试创建一种颜色检测系统,当我单击窗口时它会告诉颜色。我现在正在尝试制作cv2.rectangle
的颜色,以将颜色更改为我单击的颜色。
这是我到目前为止所做的
import cv2
import webcolors
from tkinter import *
from PIL import Image
from PIL import ImageTk
from tkinter import filedialog
import cv2
# --- functions ---
def closest_colour(requested_colour):
global colorcode
colorcode = requested_colour
min_colours = {}
for key, name in webcolors.css3_hex_to_names.items():
r_c, g_c, b_c = webcolors.hex_to_rgb(key)
rd = (r_c - requested_colour[0]) ** 2
gd = (g_c - requested_colour[1]) ** 2
bd = (b_c - requested_colour[2]) ** 2
min_colours[(rd + gd + bd)] = name
return min_colours[min(min_colours.keys())]
def get_colour_name(requested_colour):
try:
closest_name = actual_name = webcolors.rgb_to_name(requested_colour)
except ValueError:
closest_name = closest_colour(requested_colour)
actual_name = ""
return actual_name, closest_name
def click_event(event, x, y, flags, param):
global closest_name, colour2 # inform function to assign to global/external variable instead of creating local one
if event == cv2.EVENT_LBUTTONDOWN:
B, G, R = frame[x, y]
colour2 = (R, G, B) # reverse values
colour = frame[y,x][::-1] # reverse values
actual_name, closest_name = get_colour_name(colour)
font = cv2.FONT_HERSHEY_DUPLEX
closest_name = '' # create global variable at start
requested_colour = ''
cap = cv2.VideoCapture(0);
cv2.namedWindow('frame')
cv2.setMouseCallback('frame', click_event)
while True:
ret, frame = cap.read()
if closest_name:
cv2.rectangle(frame, (600, 60), (0, 0), (224, 224, 224),cv2.FILLED)
cv2.rectangle(frame, (10, 10), (100, 50), (colour2), -1)
cv2.rectangle(frame, (10, 10), (100, 50), (0, 0, 0), 2)
cv2.putText(frame, closest_name, (110, 40), font, 1, (0, 0, 0), 1)
cv2.imshow('frame', frame)
cv2.resizeWindow('frame', 500, 450)
if cv2.waitKey(40) == 27:
break
这是我遇到的错误
跟踪(最近一次通话最近):文件“ C:/ Users / Suhail Misbah / PycharmProjects / Color_Detection / colordetection.py“,第70行,在 cv2.rectangle(frame,(10,10),(100,50),(colour2),-1)TypeError:需要一个整数(元组类型元组)
答案 0 :(得分:1)
color
的{{1}}参数期望一个3整数的元组,代表三个颜色分量RGB。通过以下方式调用该函数:
cv2.rectangle
您将以下元组传递给函数:colour2 = (R,G,B)
cv2.rectangle(frame, (10, 10), (100, 50), (colour2), -1)
,这是一个包含一个元素的元组:元组。使用
((R,G,B))
相反。
更新:cv2.rectangle(frame, (10, 10), (100, 50), colour2, -1)
返回的颜色分量似乎是frame[x,y]
。但是,numpy.uint8
的{{1}}参数需要一个Python color
。您需要先转换颜色分量,例如:
cv2.rectangle