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2019-07-16 07:28:18 -0500 received badge  Supporter (source)
2019-07-08 07:14:21 -0500 commented question does camera resolution affect pose estimation?

thanks. Yes I am talking about aruco and apriltag marker. as distance to tag from camera increases, pose estimation erro

2019-07-05 16:28:25 -0500 commented answer one point (u,v) to actual (x,y) w.r.t camera frame?

@Tetragramm Now I understand. I am getting depth directly from the camera. so, getting depth at particular (x,y) pixel f

2019-07-05 16:26:58 -0500 commented answer one point (u,v) to actual (x,y) w.r.t camera frame?

@Tetragramm Now I understand. I am getting depth directly from the camera. so, getting depth at particular (x,y) pixel f

2019-07-04 09:02:04 -0500 commented answer one point (u,v) to actual (x,y) w.r.t camera frame?

@Tetragramm just small question, if you look at this link function link text , here they are using depth, pixel point 2d

2019-07-04 08:58:47 -0500 commented answer one point (u,v) to actual (x,y) w.r.t camera frame?

@Tetragramm just small question, if you look at this link function link text , here they are using depth, pixel point 2d

2019-07-04 06:15:00 -0500 marked best answer one point (u,v) to actual (x,y) w.r.t camera frame?

Hello,

I am detecting center of circle and getting (u,v) of that coordinates in Image. Now I want this (u,v) into actual world coordinates (x,y) w.r.t to camera_frame. I do not need z coordinate.

How can I get this? what is the possible way to do this?

I could not found anything relevant to this. I have my camera calibration matrix.

thanks.

2019-07-04 02:27:14 -0500 asked a question does camera resolution affect pose estimation?

does camera resolution affect pose estimation? Hi, what is effect of different camera resolution on pose estimation. is

2019-06-13 07:59:25 -0500 commented answer one point (u,v) to actual (x,y) w.r.t camera frame?

@Tetragramm t :[0,0,z] I am taking from depth directly as above we have discussed los *= distance.

2019-06-12 05:47:30 -0500 commented answer one point (u,v) to actual (x,y) w.r.t camera frame?

@Tetragramm should I consider this as right method?

2019-06-12 05:41:26 -0500 edited question robust external contour detection?

robust external contour detection? ..............

2019-06-12 05:40:16 -0500 edited question How to estimate object POSE when there are not enough features for SolvePnP?

How to estimate object POSE when there are not enough features for SolvePnP? Hello, I want to estimate 6D POSE of metal

2019-06-10 09:18:28 -0500 commented answer one point (u,v) to actual (x,y) w.r.t camera frame?

@Tetragramm thank you for your assistance. In most of the position it is working correctly except in some case when y is

2019-06-10 09:17:11 -0500 commented answer one point (u,v) to actual (x,y) w.r.t camera frame?

@Tetragramm thank you for your assistance. In most of the position it is working correctly except in some case when y is

2019-06-07 03:35:45 -0500 commented answer Turning ArUco marker in parallel with camera plane

could you look at this question link text ? where I have taken R,t as identity matrix, because camera is simply downwar

2019-06-07 03:31:22 -0500 commented answer Turning ArUco marker in parallel with camera plane

could you look at this question link text ? where I have taken R,t as identity matrix, because camera is simply downwar

2019-06-06 07:03:34 -0500 commented answer one point (u,v) to actual (x,y) w.r.t camera frame?

I have also noticed that in negative y direction there is little slope between ground and table surface. so camera plane

2019-06-06 07:03:03 -0500 commented answer one point (u,v) to actual (x,y) w.r.t camera frame?

I have also noticed that in negative y direction there is little slope between ground and table surface. so camera plane

2019-06-06 06:58:17 -0500 commented answer one point (u,v) to actual (x,y) w.r.t camera frame?

@Tetragramm real sense camera is factory calibrated. although I have done calibration and have distortion matrix and I a

2019-06-05 07:17:52 -0500 commented answer one point (u,v) to actual (x,y) w.r.t camera frame?

@Tetragramm here is attached photo https://ibb.co/09Y9fJM ,which is my workspace coordinates. also from this link link

2019-06-05 06:34:18 -0500 commented answer one point (u,v) to actual (x,y) w.r.t camera frame?

here is attached photo https://ibb.co/09Y9fJM ,which is my workspace coordinates. also from this link link text i foun

2019-06-05 05:27:32 -0500 commented answer Turning ArUco marker in parallel with camera plane

what if my camera plane is parallel to image plane, can I assume then homography as identity matrix?

2019-06-05 03:42:25 -0500 commented answer one point (u,v) to actual (x,y) w.r.t camera frame?

I have tested almost 10 different position. when object is near camera center (ex. x= 13 mm, y=58 mm) there is no error

2019-06-04 09:01:35 -0500 commented answer one point (u,v) to actual (x,y) w.r.t camera frame?

I am transforming this (x,y,z) value directly to base_link as camera frame is attached to robot(ROS URDF and TF). that

2019-06-04 09:00:07 -0500 commented answer one point (u,v) to actual (x,y) w.r.t camera frame?

I am transforming this (x,y,z) value directly to base_link as camera frame is attached to robot. that is why I think cam

2019-06-04 08:59:28 -0500 commented answer one point (u,v) to actual (x,y) w.r.t camera frame?

I am transforming this (x,y,z) value directly to base_link as camera frame is attached to robot. that is why I think cam

2019-06-04 08:54:44 -0500 commented answer one point (u,v) to actual (x,y) w.r.t camera frame?

I am transforming this (x,y,z) value directly to base_link as camera frame is attached to robot. that is why I think cam

2019-06-04 08:50:37 -0500 commented answer one point (u,v) to actual (x,y) w.r.t camera frame?

@Tetragramm as I have attached images of my setup, camera is pointed exactly straight down at the table. link text lin

2019-06-04 08:35:18 -0500 commented answer one point (u,v) to actual (x,y) w.r.t camera frame?

@Tetragramm as I have attached images of my setup, camera is pointed exactly straight down at the table. link text lin

2019-06-04 08:33:18 -0500 commented answer one point (u,v) to actual (x,y) w.r.t camera frame?

@Tetragramm as I have attached images of my setup, camera is pointed exactly straight down at the table. link text lin

2019-06-04 08:28:58 -0500 commented answer one point (u,v) to actual (x,y) w.r.t camera frame?

@Tetragramm as I have attached images of my setup, camera is pointed exactly straight down at the table. link text lin

2019-06-04 08:25:17 -0500 commented answer one point (u,v) to actual (x,y) w.r.t camera frame?

@Tetragramm as I have attached images of my setup, camera is pointed exactly straight down at the table. link text lin

2019-06-04 08:24:22 -0500 commented answer one point (u,v) to actual (x,y) w.r.t camera frame?

@Tetragramm as I have attached images of my setup, camera is pointed exactly straight down at the table. link text link

2019-06-03 09:06:00 -0500 commented answer one point (u,v) to actual (x,y) w.r.t camera frame?

@Tetragramm as my object is placed on table, so distance to table from camera is z, known. as I do not need orientation,

2019-06-03 09:04:55 -0500 commented answer one point (u,v) to actual (x,y) w.r.t camera frame?

@Tetragramm as my object is placed on table, so distance to table from camera is z, known. as I do not need orientation,

2019-06-03 08:52:29 -0500 commented answer one point (u,v) to actual (x,y) w.r.t camera frame?

@Tetragramm as my object is placed on table, so distance to table from camera is z, known. as I do not need orientation,

2019-06-03 08:50:56 -0500 commented answer one point (u,v) to actual (x,y) w.r.t camera frame?

@Tetragramm as my object is placed on table, so distance to table from camera is z, known. as I do not need orientation,

2019-06-03 08:50:06 -0500 commented answer one point (u,v) to actual (x,y) w.r.t camera frame?

@Tetragramm as my object is placed on table, so distance to table from camera is z, known. as I do not need orientation,

2019-06-03 08:48:48 -0500 commented answer one point (u,v) to actual (x,y) w.r.t camera frame?

@Tetragramm as my object is placed on table, so distance to table from camera is z, known. as I do not need orientation,

2019-05-30 09:12:18 -0500 commented answer one point (u,v) to actual (x,y) w.r.t camera frame?

@Tetragramm now I see camera calibration giving me rvec, tvec tuples for every chessboard pattern images, whose location

2019-05-30 08:53:20 -0500 commented answer one point (u,v) to actual (x,y) w.r.t camera frame?

@Tetragramm now I see camera calibration giving me rvec, tvec tuples for every chessboard pattern images. it is huge 2

2019-05-30 08:52:43 -0500 commented answer one point (u,v) to actual (x,y) w.r.t camera frame?

@Tetragramm now I see camera calibration giving me rvec, tvec for every chessboard pattern images. it is huge 25 * 6 m

2019-05-30 08:52:19 -0500 commented answer one point (u,v) to actual (x,y) w.r.t camera frame?

@Tetragramm now I see camera calibration giving me rvec, tvec for every chessboard pattern images. it is huge 256 matri

2019-05-30 06:33:54 -0500 commented answer one point (u,v) to actual (x,y) w.r.t camera frame?

@Tetragramm now I see camera calibration giving me rvec, tvec for every chessboard pattern images. it is huge 256 matrix

2019-05-30 04:12:09 -0500 commented answer one point (u,v) to actual (x,y) w.r.t camera frame?

@Tetragramm now I see camera calibration giving me rvec, tvec for every chessboard pattern images. it is huge matrix, bu

2019-05-29 09:32:41 -0500 commented answer one point (u,v) to actual (x,y) w.r.t camera frame?

camera_calibration with chessboard is giving me only _camera_matrix and _distortion_matrix.