From 40df20bdf2943b1beb4907500b257430010494ae Mon Sep 17 00:00:00 2001
From: peiszf7yu <3261107288@qq.com>
Date: Thu, 21 Jul 2022 20:33:41 +0800
Subject: [PATCH] ADD file via upload

---
 彩色直方图.py | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 彩色直方图.py

diff --git a/彩色直方图.py b/彩色直方图.py
new file mode 100644
index 0000000..73251a0
--- /dev/null
+++ b/彩色直方图.py
@@ -0,0 +1,19 @@
+import cv2 as cv
+import matplotlib.pyplot as plt
+import numpy as np
+ 
+img = cv.imread('./da.jpg')
+cv.imshow('Img', img)
+ 
+plt.figure()
+plt.title('Color Histogram')
+plt.xlabel('level')
+plt.ylabel('number of pixels')
+colors = ('b', 'g', 'r')
+for i,item in enumerate(colors):
+     hist = cv.calcHist([img], [i], None, [256], [0,256])
+     plt.plot(hist, color=item)
+     plt.xlim([0,256])
+ 
+plt.show()
+ 
\ No newline at end of file