ฝัง
- เผยแพร่เมื่อ 1 ต.ค. 2024
- source code and files: pysource.com/2...
In this tutorial, we will see how to measure objects with OpenCV and python without the need for calibration but using only the Aruco Marker standard
➤ Full Video courses:
Object Detection: pysource.com/o...
➤ Follow me on:
Instagram: / pysource7
LinkedIn: / pysource
➤ For business inquiries:
pysource.com/c...
#opencv #python #ArucoMarker
►► You can Build a Computer Vision software to DETECT and TRACK any Object.
→ 4-Step FREE Workshop pysource.com/blueprint-workshop-signup/
Excellent video! I'm working on measuring crystal deposits over time, and it looks like I'll only have to tweak a few things to get it working for my purpose!
Thank you so much for doing this. You've likely saved me days of reading, coding, and testing!
Am i the only one having problems with cv2 ad aruco. Every time it says it doesn't have this function or that function it looks like the open cv library has just deleted the whole aruco systems.
Hello sir, do you remember which Python version did you use in this video? I am having serious trouble with installing "opencv-contrib-python" and importing "cv2". Could you please help me? Also it would be perfect that you make a video about installing python, pycharm, etc. and integrating them.
Thanks in advance!
in
parameters = cv2.aruco.DetectorParameters_create()
AttributeError: module 'cv2' has no attribute 'aruco'
what's wrong?
u install in cmd:
pip install opencv-contrib-python==4.6.0.66
is there a way for me to modify the code such that if I have a stable brown background instead of a white background, it would still work?
Nice video. Have a question . Since the aruco marker is a square, length and width should be same. But for the detected aruco marker, there will be cases where length and width are not equal ( like if we take image from an angle rather than 90% from the surface of objects). How can we use this information to correct the dimensions of other objects, in case of distortions?
This example right here will only work when the angle is exactly 90%.
For different angles, the project will become more complex and it would require some perspective transformation, or a greater understanding about objects position on a 3 dimensional space.
I might do something about that in the future.
@@pysource-com i would be interested in that too.
I installed pip install object_detector it becomes error how to install this library please tell me sir
Professional programming, simple way while explaining code, thanks a lot man
Hello, I have a problem in the code when declaring.
the dictionary
cv2.aruco.Dictionary_get(cv2.aruco.DICT_5X5_50)
This error appears and I searched but the stackoverflow solutions do not work for me
I have the latest version of opencv installed
AttributeError: Module 'cv2.aruco' does not have attribute 'Dictionary_get'
Nice Project. Thanks for video!
Great Tutorial. I noticed there is a change in the pixel size of the aruco marker after you draw a polygon around the marker (line 21 ) before drawing the drawing the rectangles (line 51). Also played around with the code and noticed that change varies depending on the thickness of the line used to draw the aruco_polygon in line 21 of your script. I think what's happening is the object detection rectangles are now finding contours around the outermost border of the aruco_polygon from line 21. Please advice what is the best way to go about this.
Did u ever figure it out lol...he never responded :(
I was looking for this for months haha! Thanks man
is the size of aruko marker in the sheet is exactly 5X5 Cm ?
Great work thank you
Hi @Pysource. Does your camera have a depth sensor? Can we use any type of camera to capture the dimensions? Thank you in advance
How accurate could this get in theory ? If have parts ranging from 20mm to 200mm can it detect size with accuracy of 0.1mm or 0.2mm ? What kind of camera/resolution would needed ?
can we do this with 3D measurement?
It works with objects that aren't square or rectangle?, like circles for example.
Excellent, was looking for something like this, but, how to deal WHEN the camera IS NOT POINTING STRAIGHT DOWN in a plane??????? So, the square will be "warped"????????????????????????????????????????
This example right here will only work when the angle is exactly 90%.
For different angles, the project will become more complex and it would require some perspective transformation, or a greater understanding about objects position on a 3 dimensional space.
I might do something about that in the future.
@@pysource-com Thanks so much for reply! Yes, my team has designed a robot arm that automatically detects and picks up objects. The camera is ON THE ROBOT gripper, so yes, the first thing we need to do is to calibrate. Because we want to make this a low cost consumer product, 'good enough' is our mantra. Since we can rotate the gripper arm "until it's 90 degrees", we just need the definition of what is 90 degrees. I think we could easily check the length of the sides of your 5x5 square until all sides are approximately equal and that would be 'good enough'. But, if you have another/better suggestion???????? :) [ to be clear, we don't think we need to do transformations, rather, let the algorithm rotate the camera until w=h, and that should be very close to 90]
There would be different approaches possible. Some ideas are:
- the aruco gives you the perspective (so it can tell you the angle to rotate the arm until your reach 90°)
- you can calculate the size with different angle, by using the aruco to give you the perspective and understand the objects on the 3d space
- you can use a depth camera and you won't need even the aruco marker, but you can use the information from the camera for this
@@pysource-com These are great ideas. Good to know that aruco can do this, will give it a try and let you know how it goes! Thanks again.
when I get to 23:58, the line aruco_dict = cv2.aruco.Dictionary_get(....) gives me the error: aruco_dict = cv2.aruco.Dictionary_get(....)AttributeError: module 'cv2.aruco' has no attribute 'DICT_5x5_50'. and yes I did do the pip install for open-cv-contrib, and i'm running python 3.7.3...?
Would it be possible to take the shape outline of the object and turn it into a correctly scaled vectored image?
I can not get the source code and files, it says Unexpected ajax error. Please check the console log to get more details.
HI, we are currently working on updating the website. everything will be restored and working within a few days
after 3 days of fighting rPI, finally got pip install opencv-contrib-python to install. parameters = cv2.aruco.DetectorParameters_create() is working now. However, aruco_dict=cv2.aruco.Dictionary_get(cv2.aruco.DICT_5x5_50) throws an error: "AttributeError: module 'cv2.aruco' has no attribute 'DICT_5x5_50'". Any hint as to why?
probably you're installing an old version of Opencv.
Make sure it's one of the latest versions, like 4.5.1 or greater.
@@pysource-com pip freeze = opencv-contrib-python==4.5.2.52, and cv2.__version__ = 4.5.2
if I enter print(aruco.Dictionary_get(1) or print(aruco.Dictionary_get(2), etc., it returns ,aruco_Dictionary 0x6b21eb10> and aruco_Dictionary 0x6b21eab0 respectively, so it executes the function, it just doesn't like the 'DICT_5x5_50 parameter like in your video.
@@pysource-com No idea why, but I had to code it this way aruco_dict = cv2.aruco.Dictionary_get(5), and I now get the same corner values you do at 26:58
well, I'm so stupid sometimes: the 'x' wasn't capitalized and need to be: DICT_5X5_50 not DICT_5x5_50
Excellent Video, how I can measure the lengths straight edges and round corners thanks for help
Getting error while running HomogeneousBgdetector()
Error: HomogeneousBgdetector() is not defined
Can't find HomogeneousBgdetector() any were like git, stack over flow
help please.
Hi, I was doing everything right butr my "corners, _, _" are returning an enpty [ ]. Cna u help me?
why sometimes the frame turns black randomly? Im using logitech USB webcam on win7
Love your tutorials 🥰
hello ,
Can you make videos related to real time angle measurements. thank you
why you set value 20 in pixel_cm_ratio = aruco_perimeter / 20 ?
based on range between the camera and object?
if I want to calculate how many degrees an object will be rotated from its starting position how This can be done?
Bro,i am working on a project ,where we are going to detect and classify vehicles from cctv footage.i got a problem in classify vehicles can you plz help me...
Great video!
Is there a way to measure size of the object without having the Aruco marker in the frame? As in after calculating the pixel per Cm ratio, can we use this value only to compute the size of the object, without having the Aruco marker always in the image?
Thanks so much!
YOu always need a reference point to calculate the size.
An alternative would be to use a Depth camera, so that you know how far the object is from the camera and calibrate that to measure the size.
you can check my other video about intel realsense camera
@@pysource-com thanks so much! Love your tutorials 👍
opencv how to find the object center point and the faethest distance from the center point
Excuse me, How can I get object_detector library?
Is a certain color of background required for this to work properly? I'm having mixed results on various colors of background...
download and import my file link in description below...
its not in the description
1:50
what are the packages, library, extention, or something that must be download before running the program? cause I've running this this program but isn't working
I have used your code already it was helpful But now I am getting this error
module 'cv2.aruco' has no attribute 'DetectorParameters_create'
I have tried to uninstall and re-install Opencv-contrib, but error still persists. any idea ?
After installing an older version of opencv-contrib-python from the new version it worked
Run:
pip install opencv-contrib-python==4.6.0.66
Really usefull video. I have some problems with aruco library. I think they put it out from cv librarry?
sir i have doubt
in static image like only mobile, if we detect mobile and put boundary box, can we change the size of mobile after detected
thank you
Excellent video sir, but i want to know to dump this code for android studio app development
Someone takes his FULL COMPUTER VISION COURSE?
Update : the code has changed if you try to run this code, you must change lines of CV2 to be
سلام استاد
لطفا درمورد مختصات وعملیات در روی حرکت اشیا که دریک ریل نواری که دوربین فرم به فرم را ثبت میکند را اموزش دهید لطفا
Hi, thanks for such a great video.
I am working on a project, where I have to classify the fish in a given image, and also predict the estimated size.
The first part is done, but I am quite stuck on the second part, as there is no fixed background or perspective, so please hep me out with the approach of the second part.
Thanks....
I need to contact you please
the second part is a regression problem , use a cnn and you should be fine.
Anyone pls do help me
With this code can measure area of circles?
is there an aruco dictionary for circular objects. I want to measure the diameter of an object. So i wanted to utilize the aruco dictionary is it possible
'HomogeneousBgDetector' is not defined and getting error
please tell me how to download object detector.py
i am facing problem
Hello from Ukraine! Thank you very much for your lesson and your job!
Mate! Love your work. Understand you're very busy man, but working on a project that needs to track a moving rectangular object (moving towards and away). Surroundings will be moving. Some C programming experience. Have 400+ images of the object which I've run through Labelimg. Not sure what to use OpenCV or Tensorflow to develop further??? Was hoping to run on a small processor if possible. any thoughts??
Please Help Me Sir!
I just want ask, if I have several object with different size & weight. can I convert the size of bounding box to weight? for example : 12.4 Cm x 5.9 Cm = 1KG. or something like this. " if width 12cm to 13cm and height 5cm to 6cm, print (1KG).. Thanks.
@pysource help with this answer please
Nice tutorial, I work with java insted of python but it gave me great insight on what to do. Thanks a lot man!
Hello
Can you tell me how u did it with java
Hello, it's very nice. Your development seems to work very well with square and rectangular objects. Now, what happens if the object doesn't have that shape? For example, a wood shaving, a small piece of paper cut by hand, some shapeless pieces of plastic.
what kind of books you recommend for new comer in this field?
porq no dectecta con la camara ni mide hago es mismo codigo no me detecta el objeto estoy usando la camara web de mi lapto sera q no me funciona por eso
Could you send me link to download aruco marker you use in this video?
Hi ,thanks for video ! can me take measurements of a human body !
Thank you so much. can you suggest how to estimate altitude height, angular velocity, and distance of an any object in space and also shape and dimension debris of an orbit using Aruco marker and OpenCV python taking stereo vision camera image?
We can make lengths and widths. So how can we make weights (kilograms)?
How do we apply the weight of an object we entered earlier to other objects?
same question ?
@@Adii..740 yes. How to estimate weight with opencv cnn? I couldn't find it anywhere. Object information is known (Dimensions and weight). With what code can I make the weight of the object from the images?
@@discoveryenglish Were you able to figure this out. I am also doing something similar except I am trying to work with people.
@@ocreanbreeze9650 Unfortunately I couldn't solve it. Nobody can. I have 3 months left. But I just can't.
@@discoveryenglish Any updates? Did you manage to do it?
Hi , i didn't find the source file, can you help me?
Aruco Marker is a camera? the result of the procedure measure_object_size_camera is nothing.
We should use some special camera?
Must the size of the object be known before the detection?
My width is coming +6mm... What should i do??
Hello, I have this situation, the image output by imshow is still not the size of the original image
Can you please share the github link?
download link is not working ...! I tried but not get Email yet
wait a few minutes and check spam folder.
love your tutorial, how do I get the aruco marker, it must be present in every objects that I want to measure right?
What if object in t shape?
the video was dope! could you guys can make a video on image enhancing using super gans?
Nice video,
I want to know about image restoration
where to download object detector file
if i want to use different aruco, what should i do?
try some white objs😄
Hi how are things ! Excellent video, sorry I have a question when adding "parameters = cv2.aruco.DetectParameters_create()
aruco_dict = cv2.aruco.Dictionary_get(cv2.aruco.DICT_5X5_50)" I get an error: ttributeError: module 'cv2.aruco' has no attribute 'DetectParameters_create' could you guide me with this question?
same question here
@@sarahnawoya498 The lib has changed. Dictionar_get() = getPredefinedDictionary() and DetectParameters_create() = DetectorParameters()
@@JuuliaMachado AttributeError: module 'cv2' has no attribute 'aruco' , after replacing the names - still get this error
Thanks For This Video..
what method or algorithm do u use in this project ?
You are a fucking genius
Great tutorial! Quick question: Does this mean that if I have a custom dataset of images with objects I want to measure the size of, I have to ensure that when the images were captured, the aruco marker was equally captured with the other objects so it can serve as the reference point for the pixel to cm ratio? If yes, then won't this be a limitation in cases where you can't afford to capture the aruco marker with the actual objects you want to measure?
Looking forward to your response.
i want to know this too
instead of aruco marker, can we use any other reference object entity like coin ,metal strip or any other height and width known thing.
Yes, absolutely you can do it with any object of known sizes
Great tutorial!
I want to store the data once I exit the program, how can I do that?
great information thank you very much
thanks for your fruitful video, could I get this code to implement in my project
thanks in advance
the code is free to download. Just go on the link below the video and you'll find the article with source code
thank you
very nice video and good information
wao very nice
pip install aruco is not working. How can I install aruco library
you have to put a fan on the PI, or it will over heat during the recompile
What if the reference object is not at the same plane?
In that case this method won't work well.
To measure objects which are on different plane would be necessary a depth camera
Can I implement this project on a raspberry pi ?
Yes, this will work on a raspberry pi
thanks a lot!
i am getting an error as cv2 has no attribute as aruco (line 6)
Make sure you have the latest version and it's installed with opencv contrib library.
this is the command to run on CMD:
pip install --upgrade opencv-contrib-python
thanks alot
hello, i had a question, how can i install object_director? or how can i install it?
Thank you for the great tutorial!
Excellent tutorial. Could you tell me what software's name you are using to program python?
I'm using pycharm
@@pysource-com Thanks a lot
hello sir i wanted to ask you do you need a special phone /camera for this to work cuz i have a pretty potato phone
not really, any webcam will work with it
@@pysource-com will a mobile phoen work if so how do i connect it
Great Tutorial