Welcome new user! You can search existing questions and answers without registering, but please register to post new questions and receive answers. Note that due to large amounts of spam attempts, your first three posts will be manually moderated, so please be patient.
Because of un-manageable amounts of spam despite our use of CAPTCHAs, email authorization, and other tools, we have discontinued this forum (see the 700k+ registered users with validated email addresses at right?). Please email us any questions or post bug reports and feature requests on GitHub at https://github.com/jevois -- The content below remains available for future reference.
Welcome to JeVois Tech Zone, where you can ask questions and receive answers from other members of the community.

Object detection

0 votes
I am currently learning how to use the object detection module, i have followed the tutorials for the module but everytime i try to save a object i dont get a green box around the object aka the software dosent recognize it. i cant seem to figure out why i cant get it to work, it should just be a few simple commands but acording to the module tutorials, but no results. Any tips on how to fix this or just how to get it to work?
asked Mar 3, 2020 in Programmer Questions by Atlanteco (150 points)

1 Answer

+1 vote
The ObjectDetect module http://jevois.org/moddoc/ObjectDetect/modinfo.html has several parameters you can tune if your objects are not detected with the default settings. The default settings assume that your object has unique texture elements, and will not work well with objects that are very simple, e.g., a white square object.

First try higher "distthresh". This is how similar keypoints must be between learned image and current image.

Then try to broaden the range for "goodpts", this is how many matching key points are needed between learned image and current image.

Then try to lower "hessian" which controls how sharp keypoints have two be to be considered.
answered Mar 11, 2020 by JeVois (46,580 points)