Measure size of objects in real-time with Computer Vision | Opencv with Python

In this video we're going to measure the size of Objects in real-time using Opencv with Python.

Measuring the size of objects with Computer vision is a complex task that involves being able to identify accurately the boundaries of the objects and being able to convert them into a unit of measure (ex. centimeters, or inches).

we will go through all these steps by using a simple scenario where a camera is on a fixed position and the objects are on a plane surfaces.

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#computervision #measurement #objects

[christianrazvan]

U could have a 1 cm length band taped to the rail( on the metal part) and from that u could calculate the pixel/cm distance value and apply that to your objects measure. It saves you a complex camera or two cameras

[anuragarunedlabadkar]

Wonderful video. Please share dataset video and complete code for practice. Without dataset and code can't practice.

[Itay-cvbn]

And where is the video you mentioned that teaches about building a model for identification?

[connectrRomania]

Learning more and more from your tutos, keep it up 🥳

[Itay-cvbn]

An object that is photographed under a surface with predetermined dimensions, can the code be used with one image?

[Itay-cvbn]

During a live broadcast of the camera, when the model is running, it is possible to produce an image using a preset button and save the dimensions of the object on the image from the video?

[nakulmali]

Hello Sir first upon thanks for this video. sir i request you please upload video on how to calculate size of irregular shapes using OpenCV (my camera is moving and capturing objects)

[nikitamitrofanov]

cant you just crank up the contrast and then make the image black and white to identify the borders that way?

[abdulrahmanmohammed]

dose the camera position effect the measurements of objects ? if yes how can i avoid that

[mayankmaurya]

Sir i have to detect the node of the sugarcane on a conveyor can you help?

[geraldinaroark]

Can this method be used to measure moving objects via a camera on a conveyor belt?

[Zbyszek-jo]

when the nuts rotate how to measure how many degrees they have turned?👏😊

[keepsecret]

OK, but would much like to see a written tuition + source for this video.

[Itay-cvbn]

And can you help me with that?
Or at least tell me how to learn to do it?
If I want to take a picture of an electric harness and identify its length in centimeters with the model you created and then save the picture with the measurements

[spyts]

Nice video!!! How to insert a tolerance for the object and inform in a text box (GD / NG) if the object is within a defined tolerance? Tks

[peterr]

Thanks for sharing this wonderful idea that estimates the width of the boudning box of rois. However, as you said, a more practical application would need to put the camera right on top of the belt conveyor with the correct calibration. So in this case, I believe that a Mask-RCNN might not be helpful as it cannot obtain a percise mask and pretty clunky. In my view, any version of YOLO above 3 would be fair enough. Moreoever, some projects need to estimate the inner diameter of the nuts or to calculate the area of them which lead to the application of bernouli random variable.

[dansimek]

Hi, does anybody know how to measure size of rectangular box that can be rotated? Imagine same example as in the video, but instead of bolt nuts, it is packages and they can lay in any orientation on the conveyor belt. How would you approach that?

[_ABDULGHANI]

Thank you for this video, if I want to calculate the hight only I will use Y (Y2-Y1). is this right?
And can I use this code with YOLOv8 sgmentation?

[vechesinishto]

I can't download a resource from the site, it sends it to the subscribe screen, I write my e-mail, but it does not approve or send a code to the e-mail. Can you please take care mr. sergio?

[orhandag]

That's great video buddy !! Can you please the source that you used in video. I want to try it myself.