Face image evaluation
I am doing Near Infrared image face detection (video based). But I want to save the detected image with a good quality only; here I think I will focus on sharpness and illumination of the detected...
View ArticleProblem in conversion from float* to cv::mat
Hello I'm using VS2013 and openvc 3.0 Here I'm trying to read an image, convert it to float* from CV::MAT, do some processing, and again convert it back to CV::MAT from float* Here is the code snippet...
View Article16 bytes memory alignment for Mat images to be used with SSE instruction
Hi every one, I want to use the SSE instructions with Mat images in opencv, but the problem is that I need to perform memory alignment to 16 bytes (I am working with single chanel images). I have a...
View ArticleSimple stitching code
It is first time when I am using OpenCV, and that is for made a simple image stitching ... and I was tried the following simple code: Mat image1 = imread("D:/Tempx/Image1.bmp"); Mat image2 =...
View Articlemain.cpp:59:1: error: ‘capture’ was not declared in this scope capture =...
I was following a tutorial on web for an OpenCV library to detect eyes when i compile it this error appears I tried to fix it but didn't find a solution. main.cpp:59:1: error: ‘capture’ was not...
View ArticleHow does np.zeros() create a black background?
I am creating a very simple line drawing program. The problem is that i am still in the learning stage and I jsut stumbled across a problem. import numpy as np import cv2 img = np.zeros((512,512,3),...
View ArticleTrainCascade image positive problem
I've create a classifier using Haartraining_Stuff, i have to create a road signal detection, i create a file info, negative.txt, positive.txt and .vec file. Then i use command traincascade write like...
View Articledefault codec
Hello. I am using 2.4.0.* version of emgucv in a c# .net environment. I want to save to file a truly uncompressed video. If I put a -1 in the fourcc in VideoWriter, it pops a dialog and then I can...
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Reciclado Cartuchos De Impresora, En Waste Magazine
Es bonito cuando compras una impresora, el terror empieza cuando debes iniciar a adquirir cartuchos de tinta. Somos una compañía de servicios experta en la regeneración y recarga de cartuchos...
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Affiliate Advertising Faculty
A visitor referred by the Affiliate purchases items and companies from the Service provider. The advantages of having affiliates (or associates) build your business and assist you with advertising and...
View ArticleDetecting the image if it is clored or black and white!?
Dear, I am trying to make a simple program detect the image if it is colored or black and white, any idea of how to achieve thgat? Thanks
View ArticleTime delay in VideoCapture opencv due to capture buffer
I use a camera to get frames continuesly.In my code,i have use VideoCapture to do that. But when i debug,i find that the frame i got is the old frame. I have asked some guys, they told me that some old...
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Biggest YouTube Marketing Triumph Stories
I simply recently came back from speaking at Social Media Marketing World 2014 occasion in north park, California. Compiled by a video clip marketing expert, this comprehensive guide also debunks...
View ArticleСascadeСlassifier. Get probability of true detection.
Hello, now I am trying to understand СascadeСlassifier (Viola - Jones) algorithm. Is it possible to compute probability of detection? Can I get it from reject and weight levels returned from...
View ArticleFeature matching - Minimum numbers of matches
I'm playing with "feature matching" in OpenCV. For different types of matching methods, we need to define a condition (i.e. OpenCV – SIFT SURF ORB tutorial MIN_MATCH_COUNT = 10) regarding the minimum...
View ArticleBuilding OpenCV 2.4.11 on Ubuntu 15.04
Hi! I am trying to build OpenCV 2.4.11 on Ubuntu 15.04. I am followin the installation guide and installed the required packages, e.g libavcodec-dev libavformat-dev libswscale-dev, etc. My build is...
View ArticleCan I use OpenCV to detect when an animal enters a specific area from a live...
Hi all, I am new to Python & OpenCV. I am trying to use OpenCV to read from a live webcam feed and initiate a PsychoPy script once an object (a mouse) enters a designated area. I am kind of lost...
View Articlehuman detection from still camera
Dear all, I need to detect human silhouettes in a sequence provided by video-surveillance camera. The first step of my algorithm is motion detection based on background subtraction. I am done with...
View ArticleWould like to use different scales with HOG people detection
I think the default scaling for OpenCV's HOG implementation is 1.05 raised to some power, where that power is a value from 1 to nlevels(which is 64) . I'd like to skip the lower scales (1.05^1 -...
View ArticleFitting a point-cloud
Hi, I'm looking for a solution to fit a captured 2D-pointcloud into a given pattern of 2D-points. As result I expect the X/Y-translation and the rotation-angle. In our System we can use python 2.7 and...
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