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2018-06-18 16:18:18 -0500 commented question Method for finding Orientation Error using Axis-Angle

So why doesn't the direction of cv::Rodrigues ( error_mat ) matter ? ( If I have an angle around an axis, and then the s

2018-06-16 11:51:53 -0500 edited question Random flickers in BackgroundSubMOG2

Random flickers in BackgroundSubMOG2 Hi, I have been trying out the various background subtraction models in openCV fro

2018-06-16 01:23:36 -0500 asked a question Random flickers in BackgroundSubMOG2

Random flickers in BackgroundSubMOG2 Hi, I have been trying out the various background subtraction models in openCV fro

2018-06-16 01:05:23 -0500 commented answer Clarification of PnP variants

Hi, thanks for pointing those out. I do recall now having read that somehwere ( so annoying !) but I came across this th

2018-06-15 17:25:32 -0500 commented question Method for finding Orientation Error using Axis-Angle

But then we only find the norm of the error vector ? What about the direction then

2018-06-15 17:21:59 -0500 commented answer Clarification of PnP variants

Hi, thanks for point those out. I do recall now having read that somehwere ( so annoying !) but I came across this thesi

2018-06-15 17:20:08 -0500 marked best answer Clarification of PnP variants

Hi,

Recently I have been trying out the various PnP algorithms that are part of the openCV library, such as:

  1. P3P
  2. EPNP
  3. ITERATIVE
  4. UPNP
  5. DLS

After manually annotating a few images for the 2D correspondences (like in this tutorial), I ran into a few issues and hence

My question:

  1. UPNP , EPNP and DLS gave me the same result for all images I used. I think that UPNP and EPNP may have same result since UPNP is like EPNP for uncalibrated cameras (while my camera is calibrated), but I don't understand why DLS is giving me the same result.

  2. Can P3P algorithm accept more than 4 inputs ? Currently openCV throws an assertion error if I pass in >4 points using the P3P flag to the cv::solvePnP() method.

2018-06-15 04:18:42 -0500 edited question Clarification of PnP variants

Clarification of PnP variants Hi, Recently I have been trying out the various PnP algorithms that are part of the openC

2018-06-15 04:18:35 -0500 edited question Clarification of PnP variants

Clarification of PnP variants Hi, Recently I have been trying out the various PnP algorithms that are part of the openC

2018-06-15 04:17:55 -0500 edited question Clarification of PnP variants

> 4 points to P3P algorithm Hi, Recently I have been trying out the various PnP algorithms that are part of the open

2018-06-15 04:16:47 -0500 asked a question Clarification of PnP variants

> 4 points to P3P algorithm Hi, Recently I have been trying out the various PnP algorithms that are part of the open

2018-06-15 01:59:52 -0500 commented question Combining pose estimates from multiple sources

Hi, thanks for point that out. Yes, I tried searching the literature but couldn't really find much on this. Also, why do

2018-06-14 16:57:22 -0500 commented question Method for finding Orientation Error using Axis-Angle

In my second case I am not comparing the direction vector of the axis angle. Yes, but that is not being done in method 1

2018-06-14 09:33:18 -0500 asked a question Detecting bright points in zoomed in image.

Detecting bright points in zoomed in image. Hi, Let's say I want to detect the (x,y) coordinates of some number (>1)

2018-06-13 09:31:35 -0500 edited question Method for finding Orientation Error using Axis-Angle

Method for finding Orientation Error using Axis-Angle Hi, I have a reference value for Roll, pitch and yaw (Euler Angle

2018-06-12 22:38:17 -0500 edited question Combining pose estimates from multiple sources

Combining pose estimates from multiple sources Hi, I am receiving 6 DOF pose estimates of an object from 3 cameras. I t

2018-06-12 22:22:36 -0500 asked a question Combining pose estimates from multiple sources

Combining pose estimates from multiple sources Hi, I am receiving 6 DOF pose estimates of an object from 3 cameras. I t

2018-06-12 21:30:46 -0500 edited question Method for finding Orientation Error using Axis-Angle

Method for finding Orientation Error using Axis-Angle Hi, I have a reference value for Roll, pitch and yaw (Euler Angle

2018-06-12 21:30:26 -0500 edited question Method for finding Orientation Error using Axis-Angle

Method for finding Orientation Error using Axis-Angle Hi, I have a reference value for Roll, pitch and yaw (Euler Angle

2018-06-12 21:07:39 -0500 edited question Method for finding Orientation Error using Axis-Angle

Method for finding Orientation Error using Axis-Angle Hi, I have a reference value for Roll, pitch and yaw (Euler Angle

2018-06-12 21:07:12 -0500 edited question Method for finding Orientation Error using Axis-Angle

Method for finding Orientation Error using Axis-Angle Hi, I have a reference value for Roll, pitch and yaw (Euler Angle

2018-06-12 21:05:54 -0500 asked a question Method for finding Orientation Error using Axis-Angle

Method for finding Orientation Error using Axis-Angle Hi, I have a reference value for Roll, pitch and yaw (Euler Angle

2018-06-06 23:36:25 -0500 commented question Error in gauss-newton implementation for pose optimization

Hey, did you find a solution this ? I am currently looking to use this as well to refine some pose estimates.

2018-06-03 13:14:34 -0500 commented question Distinguishing between white and luminous objects

Hi, I would prefer a more robust solution .... I thought this would have been a common problem, but seems that is not t

2018-06-03 09:40:27 -0500 commented question Distinguishing between white and luminous objects

Hello, did anyone find a decent solution for this ? I tried using sparse optical flow on the HSV thresholded image, but

2018-05-24 00:37:41 -0500 commented question Distinguishing between white and luminous objects

Hi, My experiment is using LED in visible spectrum, IR leds would have been easy to detect (although I dont see much su

2018-05-23 06:28:05 -0500 commented question Distinguishing between white and luminous objects

Hi, thanks for replying, I have updated the question with sample images. My main issue is avoiding random white specks g

2018-05-23 06:27:48 -0500 commented question Distinguishing between white and luminous objects

Hi, thanks for replying, I have updated the question with sample images. My main issue is avoiding random white specks g

2018-05-23 06:27:31 -0500 commented question Distinguishing between white and luminous objects

Hi, thanks for replying, I have updated the question with sample images. My main issue is avoiding clutter gets harder a

2018-05-23 06:26:47 -0500 edited question Distinguishing between white and luminous objects

Distinguishing between white and luminous objects Hi, Update: Sample Image - ============= I am trying to detect m

2018-05-23 06:21:55 -0500 edited question Distinguishing between white and luminous objects

Distinguishing between white and luminous objects Hi, Update: Sample Image - I am trying to detect moving white LE

2018-05-18 00:22:26 -0500 asked a question Covariance matrices for Kalman Filter

Covariance matrices for Kalman Filter Hi, While going through this tutorial on real time pose estiamtion , the Linear K

2018-05-11 08:41:49 -0500 asked a question Distinguishing between white and luminous objects

Distinguishing between white and luminous objects Hi, I am trying to detect moving white LEDs (non-blinking, always ON)

2018-05-10 20:34:34 -0500 commented answer how to stream h264 video with rtsp in opencv- partially answered

I dont think so, I tried installing openCV 3.4 and it couldn't. What this accepted answer has suggested worked perfectly

2018-05-01 20:03:52 -0500 commented question Tracking of LED on UAV

Hi, I have now updated the question. what I meant earlier was that their colour was too bright (for the given camera) a

2018-05-01 20:03:29 -0500 edited question Tracking of LED on UAV

Tracking of LED on UAV Hi, Update: Since LED's appear really tiny once the drone starts moving away, is there some way

2018-05-01 19:34:31 -0500 commented question Tracking of LED on UAV

Hi, I have now updated the question. what I meant earlier was that their colour was too bright (for the given camera) a

2018-04-29 22:41:04 -0500 asked a question Tracking of LED

Tracking of LED Hi, I wish to track (using external cameras) some LED strips ( see this for the exact LED type) on my r

2018-04-29 22:38:25 -0500 asked a question Tracking of LED

Tracking of LED Hi, I wish to track (using external cameras) some LED strips ( see this for the exact LED type) on my r

2018-04-29 22:37:57 -0500 asked a question Tracking of LED on UAV

Tracking of LED on UAV Hi, I wish to track (using external cameras) some LED strips ( see this for the exact LED type)

2018-04-29 22:37:56 -0500 asked a question Tracking of LED on UAV

Tracking of LED on UAV Hi, I wish to track (using external cameras) some LED strips ( see this for the exact LED type)

2018-04-29 22:37:56 -0500 asked a question Tracking of LED on UAV

Tracking of LED on UAV Hi, I wish to track (using external cameras) some LED strips ( see this for the exact LED type)