Object detection deals with recognizing the presence of objects of a certain semantic class (e.g. “humans”, “buildings”, “cars”, &c) in digital image and video data.

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4answers
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OpenCV C++/Obj-C: Advanced square detection

A while ago I asked a question about square detection and karlphillip came up with a decent result.Now I want to take this a step further and find squares which edge aren't fully visible. Take a ...
23
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1answer
52k views

Simple object detection using OpenCV and machine learning

I have to code an object detector (in this case, a ball) using OpenCV. The problem is, every single search on google returns me something with FACE DETECTION in it. So i need help on where to start, ...
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2answers
13k views

Square detection doesn't find squares

I'm using the program squares.c available in the samples of OpenCV libraries. It works well with every image, but I really can't figure it out why it doesn't recognize the square drawn in that image...
21
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2answers
9k views

Train Tensorflow Object Detection on own dataset

After spending a couple days trying to achieve this task, I would like to share my experience of how I went about answering the question:How do I use TS Object Detection to train using my own ...
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11answers
39k views

What are good algorithms for vehicle license plate detection?

BackgroundFor my final project at university, I'm developing a vehicle license plate detection application. I consider myself an intermediate programmer, however my mathematics knowledge lacks ...
32
votes
4answers
57k views

OpenCV Object Detection - Center Point

Given an object on a plain white background, does anybody know if OpenCV provides functionality to easily detect an object from a captured frame? I'm trying to locate the corner/center points of an ...
23
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4answers
31k views

overlay a smaller image on a larger image python OpenCv

Hi I am creating a program that replaces a face in a image with someone else's face. However, I am stuck on trying to insert the new face into the original, larger image. I have researched ROI and ...
4
votes
2answers
18k views

Object detection with OpenCV Feature Matching with a threshold/similarity score - Java/C++

I am in the process of creating a small program which detects objects(small image) in the large image and I am using OpenCV java. As I have to consider rotation and scaling I have used ...
11
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2answers
32k views

how to detect region of large # of white pixels using opencv?

i want to detect logo inside image in order to remove it , i have an idea that's to look for objects which have the big number of pixels then remove , another idea is to loop through all the white ...
12
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2answers
24k views

OpenCV cvFindContours - how do I separate components of a contour

I've been playing around with OpenCV and with alot of trial and error have managed to learn how to detect circles (coins) in a photo. Everything is working great, except when I place coins directly ...
8
votes
1answer
19k views

Full body detection and tracking using OpenCV+Python-2.7

There are a lot of materials available to do this with C++. I would to know if there is a way to do full body detection using OpenCV in Python-2.7?Given video of a person walking along the sagittal ...
14
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3answers
2k views

TensorFlow Object Detection API Weird Behavior

I was playing with TensorFlow's brand new Object Detection API and decided to train it on some other publicly available datasets.I happened to stumble upon this grocery dataset which consists of ...
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votes
2answers
1k views

How to perform RCNN object detection on custom dataset?

I'm trying to perform object detection with RCNN on my own dataset following the tutorial on Matlab webpage. Based on the picture below:I'm supposed to put image paths in the first column and the ...
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3answers
24k views

What is “semantic segmentation” compared to “segmentation” and “scene labeling”?

Is semantic segmentation just a Pleonasm or is there a difference between "semantic segmentation" and "segmentation"? Is there a difference to "scene labeling" or "scene parsing"?What is the ...
15
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2answers
19k views

OpenCV detectMultiScale() minNeighbors parameter

I'm currently using Haar classifiers, to detect objects.On my way, I didn't understand what is the minNeighbors parameter, what isit representing?Actually I don't understand what are the neighbors ...

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