iplimage

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 trying to rotate an image in OpenCV. I've used this code that I found here on Stack Overflow: Mat source(img); Point2f src_center(source.cols/2.0, source.rows/2.0); Mat rot_mat = getRotationMatrix2D(src_center, 40.0, 1.0); Mat dst; warpAffine(source, dst, rot_mat, source.size()); Once I have my dst Mat variable type filled up I would like to put it back to an IplImage variable type, any idea about how to do this? 回答1: In the new OpenCV 2.0 C++ interface it's not really necessary to change from back and forth between Mat and IplImage ,

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 need help to convert my IplImage into Mat . I want to compute HOGDescriptor for my image and then classify it with SVM, but "compute" requires Mat type. Can you give some example of how to convert IplImage into Mat in java ? 回答1: Don't confuse the official OpenCV Java binding which is documented here and the JavaCV project which has no documentation. If you're using JavaCV , you don't need to convert your IplImage in order to use the HOGDescriptor , as you can see in the JavaCV source , the HOGDescriptor object wrapper manipulates CvArr

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 to convert an IplImage to a BufferedImage... what should be a simple task is becoming very intricate for me. I'm using JavaCv 1.0 on Mac OSX (which links with OpenCV 3.0). In the old JavaCV API there was the IplImage method #getBufferedImage, but I can't find it anymore in new 1.0 API. So I tried to convert IplImage to byte array and byte array to BufferedImage. I found this solution to perform such conversion: IplImage inputImg = cvLoadImage(imgName); //imgName is a JPEG absolute path byte[] imageData = IplImageToByteArray( inputImg)

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: How can I convert a Mat element to IplImage * element? Please Help! 回答1: Mat mat_img; //.... IplImage ipl_img = mat_img; This puts a header of IplImage on top of mat_img so there is no copying. You can pass &ipl_img to function which need IplImage* . 回答2: Mat to IplImage : IplImage *image = new IplImage(mat_img); IplImage to Mat : Mat image(ipl_img); 文章来源: opencv conversion from a Mat element to IplImage *

What is the fastest method to convert IplImage IPL_DEPTH_32S to QImage Format_RGB32? I need to catch pictures from cam and show it on form with frequency 30 frames in second. I tried to use QImage constructor: QImage qImage((uchar *) image->imageData, image->width, image->height, QImage::Format_RGB32); but image was corrupted after this. So, how can I do this fast (I think putting pixel by pixel into QImage is not a good decision)? karlphillip Before I start, OpenCV uses the BGR format by default . Not RGB! So before creating the QImage you need to convert your IplImage to RGB with: cvtColor

Is there a way to convert IplImage pointer to float pointer? Basically converting the imagedata to float. Appreciate any help on this. Use cvConvert(src,dst) where src is the source image and dst is the preallocated floating point image. E.g. dst = cvCreateImage(cvSize(src->width,src->height),IPL_DEPTH_32F,1); cvConvert(src,dst); // Original image gets loaded as IPL_DEPTH_8U IplImage* colored = cvLoadImage("coins.jpg", CV_LOAD_IMAGE_UNCHANGED); if (!colored) { printf("cvLoadImage failed!\n"); return; } // Allocate a new IPL_DEPTH_32F image with the same dimensions as the original IplImage* img

2012-08-02 01:08 　　原文： http://niw.at/articles/2009/03/14/using-opencv-on-iphone/en 　　Posted by Yoshimasa Niwaon 03/14, 2009 　　图片 　　OpenCV是intel开发的计算机视觉库，例如我们可以用它轻易地实现面部识别。本文介绍如何在iOS中使用OpenCV，包括脚本的编译及一个demo示例程序。上面的截图就取自这个demo。 　　OpenCV最新版本及所支持的iOSSDK 　　OpenCV 最新版本为2.2.0,它支持iOSSDK 4.3, Xcode 4 (04/17/2011更新) 　　开始 　　所有代码和资源都是开放的，你可以从这里下载： 　　my githubrepository. 　　它包括一个已编译好的OpenCV库和头文件。你可以轻易就使用它。如果你安装了git，可以从github克隆整个存储库。否则，可从github下载压缩包并解压缩。 　　% git clone git://github.com/niw/iphone_opencv_test.git 　　获得源代码之后，用Xcode打开OpenCVTest项目并编译它。你可以用iPhone或者iPhone模拟器运行这个demo。 　　编译OpenCV库 　

I running into problems with my openCv IplImage cropping. Assuming both tmp and img are IplImage* . Using the code: printf("Orig dimensions: %dx%d\n", img->width, img->height); cvSetImageROI(img, cvRect(0, 0,500,500)); tmp = cvCreateImage(cvGetSize(img),img->depth,img->nChannels); cvCopy(img, tmp, NULL); cvResetImageROI(img); img = cvCloneImage(tmp); printf("Orig dimensions after crop: %dx%d\n", tmp->width, tmp->height); when I use the the cvRect above I'll get an image cropped with a size of 500 x500 as expected, however when i use the rect (400,400,500,500) I'll get an image with the size

What is IplImage in OpenCV ? Can you just explain what is meant by it as a type? When should we use it? Thanks. ypnos Based on the 'c++' tag you have in your question: You should not use it, you should use cv::Mat. Every IplImage is a cv::Mat internally. IplImage is only used in the C API. It is a kind of CvMat and holds image data. Its name originates from OpenCV's roots (Intel IPL). It is not relevant anymore if you use the C++ API of OpenCV. IplImage and cv::Mat are different header types for matrix/image data. They're basically compatible with each other, but IplImage is used in OpenCV's C