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How to Convert Emgu.Cv.Image<Gray,byte> to System.Image

由 匿名 (未验证) 提交于 2019-12-03 08:54:24
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I was new to Emgu Cv and i was wondering if someone could let me know how i change Emgu.Cv.Image to System.Image?If there is a need for further explanation, let me know and i will do it.The language i am using is C#. 回答1: You can just use the ToImage() method to get a System.Drawing.Bitmap (which is a derived class of System.Drawing.Image ), so something like this // create an Emgu image of 400x200 filled with Blue color Image<Bgr, Byte> img = new Image<Bgr, byte>(400, 200, new Bgr(255, 0, 0)); // copy to a .NET image System.Drawing.Image

Border radius and overflow aren't respected when animation is added on a different element

由 匿名 (未验证) 提交于 2019-12-03 08:44:33
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: I got a weird behavior when working with transform in CSS3. Here is my code: *, *: before , *: after { box - sizing : border - box ; - moz - box - sizing : border - box ; - webkit - box - sizing : border - box ; } . btn_exchange a { position : relative ; text - decoration : none ; display : block ; width : 150px ; float : left ; color : #ffffff; font - size : 14px ; background : #0ea2d3; box - shadow : 0 3px 0 0 rgba ( 7 , 154 , 190 , 0.75 ); text - align : center ; font - weight : bold ; } @keyframes pulse { 0 % { transform :

What are gray constraints in Xcode view hierarchy debug view?

由 匿名 (未验证) 提交于 2019-12-03 08:39:56
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: I know what the solid ones are: I created them myself. What about the gray ones? Implicit, maybe via size-to-fit? The gray height conflicts with the solid height. Where do the gray ones come from? 回答1: You are inspecting an object such as a label that has an intrinsic content size. The intrinsic content size generates height and width constraints; that's what intrinsic content size is . The constraints in gray are showing you the constraints that the intrinsic content size generates. If you just look at them, you can see that: they

js数组的方法

由 ぃ、小莉子 提交于 2019-12-03 05:21:29
Javascript原生方法 注意:js数组每一项可以保存任何类型的数据，比如第一个元素是字符串，第二个元素是数字，第三个元素是对象 创建数组 tips: 建议使用数组字面量方式【简单】 var colors = new Array() var colors = new Array('red','blue') var colors = []; var colors = ['red','blue']; 检测数组 对于一个网页或一个全局作用域，可以通过如下方法 if(arr instanceof Array){ //对数组执行某些操作 } 网页中包含多个框架，通过如下ES5方法检测 if(Array.isArray(arr)){ //对数组执行某些操作 } 转换方法 arr.valueOf() var colors = ['red','blue','green'] colors.valueOf() //['red','blue','green'] arr.toString() var colors = ['red','blue','green'] colors.toString() //"red,blue,green" tips: arr.toString() 与 arr.join()输出相同，不过join里可以输入其它链接符 push、pop、unshift、shift arr

OpenCV 2.1: Runtime error

由 匿名 (未验证) 提交于 2019-12-03 03:06:01
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have a program which uses OpenCV. I have a webcam and it captures color frames and I want to convert the color frames to gray-scale frames. So, I used the cvCvtColor(color_frame, gray_frame, CV_BGR2GRAY); to convert the color frames to BW frames. Upon using this color->Grayscale conversion function, I get a runtime error as: OpenCV Error: Null pointer (NULL array pointer is passed) in unknown function, file ..\..\..\..\ocv\opencv\src\cxcore\cxarray.cpp, line 2376 Anyone experienced this problem before? Any solutions how to fix this? Thanks

Remove selection gray shadow from html input on iOS

由 匿名 (未验证) 提交于 2019-12-03 03:03:02
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm currently working on html rich text editor for my iOS application,so,the setup is simple,i have a UIWebView loading my editor code,the html input is a 'contentEditable' DIV . The problem is that every time i select this div to enter some text,a light gray frame appears on the input frame,telling the user that the textfield has been selected. NOTE :You can see the effect in this quick video My question is: How to remove this light gray frame? My html file is bellow: <html> <head> <style type="text/css"> :focus{ outline:0px solid

open cv error: (-215) scn == 3 || scn == 4 in function cvtColor

由 匿名 (未验证) 提交于 2019-12-03 03:03:02
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm currently in Ubuntu 14.04, using python 2.7 and cv2. When I run this code: import numpy as np import cv2 img = cv2.imread('2015-05-27-191152.jpg',0) gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY) it returns: File "face_detection.py", line 11, in gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY) cv2.error: /home/arthurckl/Desktop/opencv-3.0.0-rc1/modules/imgproc/src/color.cpp:7564: error: (-215) scn == 3 || scn == 4 in function cvtColor I already searched here and one answer said that I could be loading my photo the wrong way, because it should

fitting a circle to a binary image

由 匿名 (未验证) 提交于 2019-12-03 02:14:01
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have been using skim age's thresholding algorithms to get some binary mask. For example, I obtain binary images like this: What I am trying to figure out is how can I fit a circle to this binary mask. The constraint is the circle should cover as much of the white areas as possible and the whole circumference of the circle should lie entirely on the white parts. I have been wrecking my head on how I can do this efficiently but have come up with no solution that works. One approach I thought that might be something is: Find some optimal

How does one convert a grayscale image to RGB in OpenCV (Python) for visualizing contours after processing an image in binary?

由 匿名 (未验证) 提交于 2019-12-03 01:59:02
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am learning image processing using OpenCV for a realtime application. I did some thresholding on an image and want to label the contours in green, but they aren't showing up in green because my image is in black and white. Early in the program I used gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY) to convert from RGB to grayscale, but to go back I am confused, and the function backtorgb = cv2.cvtColor(gray,cv2.CV_GRAY2RGB) is giving AttributeError: 'module' object has no attribute 'CV_GRAY2RGB'. The code below does not appear to be drawing

OpenCV version 4.1.0 drawContours

由 匿名 (未验证) 提交于 2019-12-03 01:39:01
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have the following code that worked well with OPenCV 3.4.1 and now is not working with OpenCV 4.1.0 and gives an error. I do not know how to adapt the code with the newer version, can you help me with that? Thanks a lot def ImageProcessing(image): image = cv2.absdiff(image, background) h, gray = cv2.threshold(image, 65, 255, cv2.THRESH_BINARY_INV); gray = cv2.medianBlur(gray,5) kernel = np.ones((3,3), np.uint8) gray = cv2.erode(gray, kernel, iterations=1)#1 des = cv2.bitwise_not(gray) tmp = cv2.findContours(des,cv2.RETR_CCOMP,cv2.CHAIN
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