我想从 中的图像中提取文本python。为了做到这一点,我选择了pytesseract。当我尝试从图像中提取文本时,结果并不令人满意。我也经历了这个并实现了列出的所有技术。然而,它的表现似乎并不好。
图像:
代码:
import pytesseract
import cv2
import numpy as np
img = cv2.imread('D:\\wordsimg.png')
img = cv2.resize(img, None, fx=1.2, fy=1.2, interpolation=cv2.INTER_CUBIC)
img = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
kernel = np.ones((1,1), np.uint8)
img = cv2.dilate(img, kernel, iterations=1)
img = cv2.erode(img, kernel, iterations=1)
img = cv2.threshold(cv2.medianBlur(img, 3), 0, 255, cv2.THRESH_BINARY + cv2.THRESH_OTSU)[1]
pytesseract.pytesseract.tesseract_cmd = 'C:\\Program Files\\Tesseract-OCR\\tesseract.exe'
txt = pytesseract.image_to_string(img ,lang = 'eng')
txt = txt[:-1]
txt = txt.replace('\n',' ')
print(txt)
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输出:
t hose he large form might …Run Code Online (Sandbox Code Playgroud) 我想根据用户的屏幕亮度更改背景图像的亮度。让我用一个简单的例子来证明这一点。
例如,让这些是我的html和css文件:
*{
margin: 0;
padding: 0;
box-sizing: border-box;
}
.hero{
width: 100%;
height: 100vh;
background: linear-gradient(rgba(0,0,0,0.6),rgba(0,0,0,0.6)),url('https://cdn.decorilla.com/online-decorating/wp-content/uploads/2018/10/modern-interior-design-grey-living-room2.png');
background-size: cover;
background-position: center;
display: flex;
align-items: center;
justify-content: center;
}
.content{
width: 50%;
}
.content h1{
color: #fff;
text-align: center;
font-size: 2rem;
}Run Code Online (Sandbox Code Playgroud)
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<link rel="stylesheet" href="style.css">
</head>
<body>
<div class="hero">
<div class="content">
<h1>My Test Text!</h1>
</div>
</div>
</body>
</html>Run Code Online (Sandbox Code Playgroud)
只有当用户的屏幕亮度较低时,效果才好。当屏幕亮度增加时,前景不会从背景中突出。相反,对于明亮的屏幕,Analpha值0.75 …