astronaut's profile - activity

Surface Matching never get any results with any data, why? Hi Im trying to get working the Surface Matching Sample code

I can get rid of the planar surface with point clouds but don't know how to do that in OpenCV and 2D Images

So I want to get some quick ad-hock solution od using 3D to 2D correspondence using solvePnP. Clear now.? I have all typ

there are methods in Point Clouds, such as correspondence grouping, segmentation(get rid of the planar surface so you pr

there are methods in Point Clouds, such as correspondence grouping, segmentation(get rid of the planar surface so you pr

what you mean and how would you "reduce" it, so it mainly contains the box points ?

No. I have a stereo camera. The image was only the left camera raw distorted image. Plus I have ZED depth Cameras. I onl

what about the Surface Matching Algorithm. Using Point Clouds I got some good results. So means, point clouds would be a

what about the Surface Matching Algorith. Using Point Clouds I got some good results. So means, point clouds would be a

So mainly even if I get the other corners points by moving the camera and view with different angles then still remain t

So mainly even if I get the other corners points by moving the camera and view with different angles then still remain t

Well, I will get better images, better contrast, rectify them, proper thresholding. Secondly also will get a better cont

Well, I will get better images, better contrast, rectify them, proper thresholding. Secondly also will get a better cont

Its a box like in the image. And the Camera is on the top. Can be from different angles but always must be the camera on

How to use contours and Harris corners Functions in solvePnP? Hi I have code to extract the 2D coordinates from prior k

3D object is a box. I have an Image of the detected 2D Points. Ok I show it in my question. Will add the image of the de

How to use contours and Harris corners Functions in solvePnP? Hi I have code to extract the 2D coordinates from prior k

How to get 2d correspondances for 3d cad model points for non textured objects? Hi I have to estimate a very accurate

how to get the 2d correspondances for your 3d cad model points? Do i need to train the model ? Or just use orb or surf f

Position(x,y,z) and Orientation (in the all 3 axes). So totally 6 Ok?

How to get the 6D Pose knowing the 3D CAD model and 2DImage of the object? Hi I have the 3D CAD Model of the Object Its

How to get the 6D Pose knowing the 3D CAD model and 2DImage of the object? Hi I have the 3D CAD Model of the Object Its

I want to know the ground truth so I can estimate the error of the Oriented Bounding Box. The 6D Pose estimation was don

How to estimate the real distance and angle from 2D Image? Hi I have done some 6D Pose estimation, and have the Oriente

Hi. Just wondering if this method can lead to very accurate pose (position and orientation) estimation, Im looking for

So one approach is to compare the 3DCAD model with 2D images and the other one compares 3D CAD model with the correspond

Accurate 6D Pose estimation using known 3D CAD model HI Hi. I have to estimate a very accurate 6D Pose of regular shap

I know about LIdar. But Im not looking for Lidar solution. Only stereo camera

also my camera has fixed focal length of 6mm.

i see this article use fish eye cameras. can be used with normal one? Is that need only stereo camera or also other sens

Im more interesting in the approach for remote sensing using fixed point with gps coordinate. Any help where can find s

I cant have the baseline couple of meters as the application doesn't allowed. Maybe maximum 60-70cm.

Get accurate depth from two monocular cameras (working as stereo) by long distances ? Hello I have two Cahmeleon3 mono

ok. thanks. the real distance measured with laser to the chessboard from the camera is 7.9 m. the focal length is 450 pi

I rectified and created disparity Map from calib3d module's StereoBM. But now is the final step how to find the distance

How to find the depth (distance from the camera to the object) in m from disparity map, knowing all calibration paramete

How to find the depth (distance from the camera to the object) from dispaity map, knowing all calibration parameters ? H

How to find the depth (distance from the camera to the object) from dispaity map, knowing all calibration parameters ? H

How to find the depth (distance from the camera to the object) from dispaity map, knowing all calibration parameters ? H

my stereo depth subject is not always a checkerboard. in this way I only want to check the accuracy of the stereo camera

Ok thanks. First, I just like to compute the depth from the camera to the object(chessboard ) and see how accurate is co

How to use stereo camera calibration restults to check accuracy of the camera for long distances? Hi Im using two point

How to use stereo camera calibration restults to check accuracy of the camera for long distances? Hi Im using two point

How to use stereo camera calibration restults to check accuracy of the camera for long distances? Hi Im using two point

thanks. I need to find monocular Camera that is able to detect the swing angle and obstacle at a distance around 40metre

yes, but how about if the distance to the camera is more then 50m? Is this possible in that case and which approach to u

Obstacle avoidance with pure Vision approach? I would like to do obstacle avoidance using pure Vision approach. I will u

how about live stream? what do you mean waving the chessboard? what kind of images they should be?

Hi

'm using the camera calibration source code from OpenCV in this link (http://docs.opencv.org/2.4/doc/tutori...)

Im using IP HD Camera. I have the IP address of the camera and able to get the live stream of the camera. But its very slow processing the camera live stream. Like for one real sec it need more then 20 sec. So Im not able to calibrate. This are the setting Im using

<?xml version="1.0"?>
<opencv_storage>
<Settings>
<!-- Number of inner corners per a item row and column. (square, circle) -->
<BoardSize_Width>3</BoardSize_Width>
<BoardSize_Height>4</BoardSize_Height>
<!-- The size of a square in some user defined metric system (pixel, millimeter)-->
<Square_Size>4</Square_Size>
<!-- The type of input used for camera calibration. One of: CHESSBOARD CIRCLES_GRID 

ASYMMETRIC_CIRCLES_GRID -->
ra>
<Calibrate_Pattern>"CHESSBOARD"</Calibrate_Pattern>
<UseCamera>1</UseCamera>
<IPCamera>"192.168.0.10"</IPCamera>
<!-- If true (non-zero) we flip the input images around the horizontal axis.-->
<Input_FlipAroundHorizontalAxis>0</Input_FlipAroundHorizontalAxis>
<!-- Time delay between frames in case of camera. -->
<Input_Delay>1</Input_Delay>
<!-- How many frames to use, for calibration. -->
<Calibrate_NrOfFrameToUse>30</Calibrate_NrOfFrameToUse>
<!-- Consider only fy as a free parameter, the ratio fx/fy stays the same as in the input 

cameraMatrix. Use or not setting. 0 - False Non-Zero - True-->
<Calibrate_FixAspectRatio> 1 </Calibrate_FixAspectRatio>
<!-- If true (non-zero) tangential distortion coefficients are set to zeros and stay zero.-->
<Calibrate_AssumeZeroTangentialDistortion>1</Calibrate_AssumeZeroTangentialDistortion>
<!-- If true (non-zero) the principal point is not changed during the global optimization.-->
<Calibrate_FixPrincipalPointAtTheCenter> 1 </Calibrate_FixPrincipalPointAtTheCenter>
<!-- The name of the output log file. -->
<Write_outputFileName>"out_camera_data.xml"</Write_outputFileName>
<!-- If true (non-zero) we write to the output file the feature points.-->
<Write_DetectedFeaturePoints>1</Write_DetectedFeaturePoints>
<!-- If true (non-zero) we write to the output file the extrinsic camera parameters.-->
<Write_extrinsicParameters>1</Write_extrinsicParameters>
<!-- If true (non-zero) we show after calibration the undistorted images.-->
<Show_UndistortedImage>1</Show_UndistortedImage>
</Settings>
</opencv_storage>

What is wrong? Also when use the video more as imput I have the same probolem. Recorded the video but then when run the calibration program processing video is so slow and not able to calibrate the camera, Please any help?