Pose Estimation of Objects in OpenCV Python

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In this video 📝 I'll talk about Pose Estimation of Objects in OpenCV Python. We are going to see how we can use the camera parameters to estimate the pose of an object in the image frame when we have the world coordinates of the object. We will get the parameters from camera calibration and use built-in methods from OpenCV to get the pose estimation. At the end of the video, we will see the results and draw a coordinate system and a box on the object which represents the pose estimation.

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Tags:
#PoseEstimation #CameraParameters #OpenCV #ComputerVision

[NicolaiAI]

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[radot]

Some great explanations of complex academic machine vision concepts. Structured lighting would be a very interesting topic (stripe lines for distance estimation).

[NiloRiver]

Exactly what I was looking for. Thank you!

[vladkizel]

exactly what I was looking for! thank you for the great explanation :)

[lewislord]

thank your sir for the video. please can you do one video to exolain about "Motion estimation"??

[RaxaroksGamePlays]

This video fit me like a glove, thanks mate!

[satpalsinghrathore]

I have already clicked RGB images, 3Dmodel.ply & camera parameters. Do you know of a tool to get R & T matrices for each image?

[mohammadhaadiakhter]

Hey, I wish to determine the pose of an object in a given photo. I have a bounding box around that object(with the help of object detection technique), and I am taking 5 points as control points-the four vertices of the corners and centre of the bounding box. I am confused as to what I should take the world co-ordinate frame? Can you please help me out?

[sarathkumar-gqbe]

i saw that video camera calibration from that u get matrix of camera and distortion my question where we use those values
of distoriton and other value

[nguyenluu]

You've made great turorials! Can you explain how should we choose the resolution of camera to detect small object at long distance (3m-7m)? Thanks

[wishIKnewHowToLove]

Hello great tutorial could you please tell me how do i get the npz?

[adulis]

thank you for the great explanation. I have a small problem that I cant find an explanation for anywhere and I would really appreciate it if you put me on the right track.
How can I find the location of a 3d point in the World frame which origin is the checker board origin in mm If I have the 3D location of the point in mm in the camera frame and the tvec and the rvec of that particular view of the checker board?
I just want to know if I can find a way to use the tvec and the rvec to transform a point from the camera frame to the world frame.
And If I can't, what should I do in my case to obtain the 3d coordinates of a point in the world frame in mm.
I'm using a kinect v2 which offers a depth sensor If that can help in any way.

[ajayv]

Thanks for this video! How do I estimate the height and width of a real world object with the obtained intrinsic, extrinsic, and distortion parameters??

[bakersaga]

How do I do the opposite of this, finding my camera's pose from an image (or multiple images)? Since solvepnp find the rotation and translation from the world system to the camera system, do I just transpose the rotation and invert the point?

[tomlorenz]

When I load the Calibration Parameter in, then I get an error : Cannot load file containing pickled data when allow_pickle=False
What Can I do?

[jeepjr]

Teacher, first congratulations for the channel. I need your help, I have a simple image with a range of 5 placements where the quantity is identified, how do I identify the biggest color type red and say where the X, Y is, and if you can help me, and only for create an alert.

[inshaandrabi]

Why does the axis and draw function throw a type in 0 indexed part

[donnydonito]

hei nice video and great explanation ... I would like to ask you if you know a working implementation of the LINE2D algorithm (or similar) to do the detection and pose estimation of a texture-less object, using only a 2D grey image and template matching with 3D model ( no Deep learning or similar); I am freaking out to find something that works as I am new to computer vision :)

[vijayprasath]

I want to find the measurement of any object If I place on the chess board.How can I do that?I want height, width and depth of the object

[ronaldmiguelzafraurrea]

Hi Nicolai. Thanks for these videos.

I have a doubt. I was proving the pose estimation code with boxes option and It haven't any problem but when use draw function and axis variable it shows an error in method cv.line in draw function. something like that "cv2.error: OpenCV(4.5.5) :-1: error: (-5:Bad argument) in function 'line'"

Do you know if is any problem in parameters declaration or something else? Thanks beforehand