# \#segmentation **URL:** https://forum.opencv.org/tag/segmentation/171.md [Latest](https://forum.opencv.org/latest.md) · [Categories](https://forum.opencv.org/categories.md) · [Tags](https://forum.opencv.org/tags.md) --- ## [Calculation of pipe dimensions, pipe geometry](https://forum.opencv.org/t/calculation-of-pipe-dimensions-pipe-geometry/24585)
**Author:** [@GANDA1F7](https://forum.opencv.org/u/GANDA1F7)\ **Replies:** 1\ **Last updated:** [June 17, 2026, 10:30pm UTC](https://forum.opencv.org/t/calculation-of-pipe-dimensions-pipe-geometry/24585 "2026-06-17T22:30:01Z")
We are using YOLO11 segmentation to detect inner and outer contours of a pipe cross-section. The goal is to measure inner diameter, outer diameter and wall thickness in millimeters. The challenge is that segmentation mas… --- ## [SimpleBlobDetector not detecting blobs on image's borders](https://forum.opencv.org/t/simpleblobdetector-not-detecting-blobs-on-images-borders/15889)
**Author:** [@il\_mix](https://forum.opencv.org/u/il_mix)\ **Replies:** 0\ **Last updated:** [December 18, 2023, 2:21pm UTC](https://forum.opencv.org/t/simpleblobdetector-not-detecting-blobs-on-images-borders/15889 "2023-12-18T14:21:34Z")
I’m trying to extract blobs from an image using SimpleBlobDetector. I’m not able to detect blobs on image’s edges. Here is my code: SimpleBlobDetector::Params params = SimpleBlobDetector::Params(); params.minThreshold … --- ## [After processing the semantic segmentation results of Deeplabv3 using Argmax, the results were incorrect. Please help me take a look](https://forum.opencv.org/t/after-processing-the-semantic-segmentation-results-of-deeplabv3-using-argmax-the-results-were-incorrect-please-help-me-take-a-look/13136)
**Author:** [@ZJD](https://forum.opencv.org/u/ZJD)\ **Replies:** 7\ **Last updated:** [May 11, 2023, 12:34pm UTC](https://forum.opencv.org/t/after-processing-the-semantic-segmentation-results-of-deeplabv3-using-argmax-the-results-were-incorrect-please-help-me-take-a-look/13136 "2023-05-11T12:34:50Z")
The inference statement used is this： Mat score = net.forward("outputs"); The output format of the model is float \[1x2x512x648\] The input image looks like this： I can parse the correct results using these few codes. … --- ## [Break image down to bottles only](https://forum.opencv.org/t/break-image-down-to-bottles-only/11573)
**Author:** [@Paul\_Allsopp](https://forum.opencv.org/u/Paul_Allsopp)\ **Replies:** 4\ **Last updated:** [February 7, 2023, 9:24pm UTC](https://forum.opencv.org/t/break-image-down-to-bottles-only/11573 "2023-02-07T21:24:50Z")
Hello all. I’m working on a project were I have a series of images of bar walls, and what I’m trying to do is identify the bottles. Initially I was thinking of using a semantic segmentation algorithm to get rid of all e… --- ## [Segmentation of small dust particles using Watershed and Distance Transform](https://forum.opencv.org/t/segmentation-of-small-dust-particles-using-watershed-and-distance-transform/10873)
**Author:** [@Ross](https://forum.opencv.org/u/Ross)\ **Replies:** 0\ **Last updated:** [November 8, 2022, 10:27am UTC](https://forum.opencv.org/t/segmentation-of-small-dust-particles-using-watershed-and-distance-transform/10873 "2022-11-08T10:27:36Z")
I’m trying to separate the dust particles in a picture. To do so, I was thinking of using the watershed algorithm (it’s the first time for me using it). The picture I’m working with is the following: Following the t… --- ## [How to locate RawMeat Ribs](https://forum.opencv.org/t/how-to-locate-rawmeat-ribs/910)
**Author:** [@1114](https://forum.opencv.org/u/1114)\ **Replies:** 0\ **Last updated:** [January 18, 2021, 2:54am UTC](https://forum.opencv.org/t/how-to-locate-rawmeat-ribs/910 "2021-01-18T02:54:20Z")
Hi, I want use 2d image to locate Ribs. like the draw contours. --- ## [Run matlab trained model in onnx format in c# and/or c++](https://forum.opencv.org/t/run-matlab-trained-model-in-onnx-format-in-c-and-or-c/7545)
**Author:** [@Yuwee](https://forum.opencv.org/u/Yuwee)\ **Replies:** 1\ **Last updated:** [February 13, 2022, 8:58am UTC](https://forum.opencv.org/t/run-matlab-trained-model-in-onnx-format-in-c-and-or-c/7545 "2022-02-13T08:58:27Z")
Need test code to run interference in openCV C++/C# platform to run ONNX network. --- ## [Finding the required color interval for segmentation](https://forum.opencv.org/t/finding-the-required-color-interval-for-segmentation/7327)
**Author:** [@Jaegermeister](https://forum.opencv.org/u/Jaegermeister)\ **Replies:** 5\ **Last updated:** [January 28, 2022, 4:52pm UTC](https://forum.opencv.org/t/finding-the-required-color-interval-for-segmentation/7327 "2022-01-28T16:52:42Z")
I am trying to get the plant as it is by segmenting everything else in the region, but I am unable to pinpoint the boundaries of the colors forming the plant: It’s a straightforward task that I am using the following…