Questions tagged [visual-tracking]

Visual-tracking is a computer-vision task that consists of detecting and tracking objects with a camera.

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MATLAB Image-Processing Toolbox: asking for a roadmap!

I plant trees in the north of BC for a living and have next to none sp experience, please be gentle :^] TLDR: The problem is essentially this: tracking and calculating the "height" of three ...
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KLT tracker, reject tracked occluded points

I want to use KLT tracker for a visual odometry application. Thus, I only want to track object features. Currently I'm using OpenCV's implementation ...
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97 views

“Bi Directional” Kalman Filter

I am working on a project in Object Tracking, i.e. need to predict the location of next bounding box. I used a Hungarian algorithm with a Kalman Filter which produced decent results. However, lots of ...
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How to detect moving object from moving camera?

I want to detect the moving object(human) from moving camera. Which is the best suited method for this? Do we have to perform detection in each frame or tracking the detected object is better? Will ...
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Objeckt tracking - filter training (MOSSE)

For a project I'd like to set up an easy to implement tracker. I read several papers and chose to go for the mosse (minimum output of squared error) tracker from Bolme et al. The formula to obtain ...
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2answers
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Tracking unknown number of signals/coordinates

I have a time series data. Where for every time step I have a varying number of object coordinates. I want to track these over time. There might also be some missing coordinates for a few frames. ...
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1answer
80 views

Tracking an object in a video with

I need to track an object in a video with MATLAB. There is an example frame from the video above. I need to track that car that carries the pendulum. But my problem is there is a bar behind the car ...
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626 views

Hand tracking, state of the art

I am looking for a framework for extracting hand region from the video feed from the webcam(analogous to Viola Jones HAAR detection of face). This region of interest will serve as input for a CNN for ...
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1answer
2k views

How can I track detected objects from frame to frame

I want to track people's faces in a video stream (like a security camera), but I am running into a problem. I was using a Haar classifier to find the faces and sending the detected faces to a system ...
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Is image processing impacted by the lens or sensor size of the camera?

We want to configure a system for detecting and tracking basketball shots made. We have control over the cameras, so we can choose anything from a smartphone to a GoPro. Assume the scene is a typical ...
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Turning a MPG video into a set of coordinates

I have a video in MPG format showing a white mouse with a strong black dot on the head moving around on an off-white background, so effectively a black dot moving around on a 2-D plain surface. From ...
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Algorithm for object tracking

In a video sequence, I would like to track an object. Right now, my detection algorithm can correctly locate the object in approximately 10% of the frames, and incorrectly find something else in 5% of ...
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428 views

Kalman filter for tracking obstacles

I'm developing a Computer Vision project in Matlab as an aid to visually impaired people. The setup would be a stereo pair of cameras which the blind person would carry. Using this stereo information, ...
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Object Tracking with Improved Detector of Objects Similar to Target

I read this paper and need your help to understand it. Object Tracking with Improved Detector of Objects Similar to Target In paper, particle at the frame $t$ is represented by: $$c^{(i)}_t(i=1,\...
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Kalman Filter for estimating position with nonconstant velocity & acceleration

I am trying to estimate the position & head direction of a rodent going through a 2D environment (a circular surface of 1m radius). Above his head is an overhead camera which records 4 LEDs ...
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How to detect malformed-ellipse-alike objects?

I need to process a stack of ultrasonic images, where there is mostly a lot of noise to see, but I need to extract specific objects that look for example like this: Here is an example from Wikipedia ...
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What does “kernel based” mean?

In my thesis I try to explain what kernel based methods are, especially the meaning for object detection. I know kernel based methods like Mean- and CamShift and I know how to use them. I understand ...
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657 views

Calibration (intrinsic) parameters of a virtual camera with some known information

I need the calibration matrix of my simulated camera, I am trying to fully comprehend and follow the steps from Step by Step Camera Pose Estimation for Visual Tracking and Planar Markers as well as ...
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Tracking a ball (using EmguCV)

I've got a video of a ball, I've done background subtraction (using MOG2) to isolate the change in the image. And I'm performing a blur to remove some of the noise caused by light/shadows/etc. So, ...
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556 views

KLT tracker implementation

I'm working on a object tracker based on KLT algorithm using matlab. Can anybody guide me how I can find the features and calculate the distance in the sequence of the frames? Thanks.
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Why optical flow ? why not tracking

I have a question that might be stupide ! Supposing that I try to detect object moving in a video or human action. Many works are based on optical flow computation. My question is why using OF is ...
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Fusing motion and color in particle filter

I am trying to implement particle filter to track a car bounded by a box. First i used color histogram as my likelihood function and implemented PF, where i was using the bhattacharya distance to get ...
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Pedestrian Re-identification during tracking

During the multi-camera tracking, there is a situation where one person moves from one camera's coverage area to another. In that case that person has to be re-identified(as the one from previous ...
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Edge following using Hough transform

I am trying to improve an edge following algorithm developed by some students who did a project at my work. The algorithm is supposed to make a robot follow a line with the use of a camera. Their ...
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Recognizing object of interest in object tracking using Lucas-Kanade method

I am able to find out the velocities of pixels using the Lucas-Kanade method. Now I want to use it for tracking. I am using a Kalman filter taking $x$, $y$, $v_x$ and $v_y$ ($(x,y)$ is position of a ...
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Purpose of image feature detection and matching

I'm a new guy in image processing and computer vision, so this question might be stupid to you. I just learned some feature detection and description algorithms, such as Harris, Hessian, SIFT, SURF, ...
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How to Count the number of People in a room using CCTV Camera feed?

I am trying to find out how can I count the number of people in a room using the feed coming in from a CCTV camera fixed in one of the top corners of the room. The number of cameras can be 2 at max ...
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1answer
159 views

Histogram operation for improving visual object tracking

I'm developping a people tracking with nearest neighbour data association technique and kalman filter for smoothing/predicting. The tracker works quite good but sometimes it mismatch objects if they ...
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resources for learning more about pedestrian tracking

I would like to build a computer vision application capable of doing robust pedestrian tracking in potentially crowded environments from a single video source. To this end I would like to find ...
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Vehicle segmentation and tracking

I've been working on a project for some time, to detect and track vehicles in video captured from UAV's, currently I am using an SVM trained on bag-of-feature representations of local features ...
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Object Tracing with Particular Color

I started working on a autonomous robot project in my spare time. Everything is finished except the image proccessing part. I want my robot to follow an object with particular properties. For the ...
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Step by Step Camera Pose Estimation for Visual Tracking and Planar Markers

I have been working on the topic of camera pose estimation for augmented reality and visual tracking applications for a while and I think that although there is a lot of detailed information on the ...