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Questions tagged [video-tracking]

Tracking a moving object or feature (e.g. a face) in video input.

126 questions
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2 answers

What does size and response exactly represent in a SURF keypoint?

I'm using OpenCV 2.3 for keypoints detection and matching. But I am a bit confused with the size and response parameters given by the detection algorithm. What do they exactly mean? Based on the OpenCV manual, I can't figure it out: float size:…
Tulkkas
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3 answers

OpenCV Optical Flow assertion

I'm attempting to track landmarks along the contour of facial features obtained via dsift with python 2.7 and openCV 2.4.11. I want to track these features between frames. However I am receiving the following error. I have checked the input images…
lukemtesta
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6 answers

Compare two bounding boxes with each other Matlab

I have two the co-ordinates of two bounding boxes, one of them is the groundtruth and the other is the result of my work. I want to evaluate the accuracy of mine against the groundtruth one. So I'm asking if anyone has any suggestions The bounding…
Tak
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1 answer

Unable to run Tracking on Open CV 3.4.1 on Python 3.6.6

I tried running tracking using open CV on python 3.6.6, but it shows: AttributeError: module 'cv2' has no attribute 'TrackerKCF_create' I also tried the python 2.7 API, but the same result: AttributeError: module 'cv2' has no attribute…
Aditya Singh
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1 answer

Tracking multiple moving objects with KalmanFilter in OpenCV/C++ - How to assign tracks individually to detected objects

I am working on realtime movement detection and object tracking in OpenCV/C++ and am currently stuck at the tracking part. Matlab-Example of what I want to do:…
Appuru
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2 answers

Boundingbox defintion for opencv object tracking

How is the boundingbox object defined that takes opencv's tracker.init() function? is it (xcenter,ycenter,boxwidht,boxheight) or (xmin,ymin,xmax,ymax) or (ymin,xmin,ymax,xmax) or something completely different? I am using python and OpenCV 3.3 and i…
gustavz
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Kalman filters for Multiple Object Tracking in videos

From what I've understood, tracking algorithms predict where a given object will be in the next frame (after object detection is already performed). The object is then again recognized in the next frame. What isn't clear is how the tracker then…
agent_Jay
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People Detection and Tracking

I want to do pedestrian detection and tracking. Input: Video Stream from CCTV camera. Output: #(no of) people going from left to right # people going from right to left # No. of people in the middle What have i done so far: For pedestrian…
2vision2
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1 answer

CamShift + Face detection in OpenCv

I'm currently combing two examples from OpenCv which let you detect your face and track object. The purpose is to first detect the face and then track it. My code currently : import numpy as np import cv2 import cv2.cv as cv import video import…
Olivier_s_j
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volleyball court ball tracking, court stitching

I have a question from school project. So we are given the task of tracking the volleyball from a given beach volleyball match video in mov format. The task is to track the ball and output the whole volleyball court in birds eye view, and also to…
leo277
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2 answers

OpenCV Human Body Tracking

Hi I am new to OpenCV and I am trying to implement human body tracking using a camera placed on a fixed position. I did a bit of a research and I came across Histogram of Oriented Gradients method but based on my understanding what it does is…
user2900552
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1 answer

Meanshift algorithm for tracking objects issue computing centroid update of search window

I have been trying to implement the meanshift algorithm for tracking objects, and have gone through the concepts involved. As per now I have managed to successfully generate a backprojected stream from my camera with a single channel hue roi…
Ragesam
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1 answer

Color tracking using EMGUcv

I am trying to make an colored object tracker which uses a binary image and blob detector to follow the target sort of like this: https://www.youtube.com/watch?v=9qky6g8NRmI . However I can not figure out how the ThresholdBinary() method work and if…
e_phi
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1 answer

Kalman prediction & correction same as start values

Im implementing a kalman filter that receives real measurements from a camshift head tracking after previously detecting the face with an Haar Cascade. I initialise the state pre and state post variables from the kalman filter with the head position…
Jack Eisenherz
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1 answer

How to change colors of the tracking points and connector lines on the output video using Mediapipe Pose?

I am referring to 33 body points and connector lines between them. I'd like to change the colors of those, especially of the white default color of the connector lines. Here's my code, I have created a class module for mediapipe which I can import…
Atharva Katre
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