ElliotHC Active Member Licensed User Nov 18, 2022 #1 I have a project where I need to track a few different moving coloured shapes. Is there a tutorial or code snippet which is geared mostly around tracking colours? Thanks
I have a project where I need to track a few different moving coloured shapes. Is there a tutorial or code snippet which is geared mostly around tracking colours? Thanks
kimstudio Active Member Licensed User Longtime User Nov 19, 2022 #2 Google the thread subject should return many tutorials as this is a basic application for OpenCV. The jOpenCV lib for B4J is encapsulated very well so conversion from the example to B4J line by line should be straight. Basically: convert image colorspace from RGB to HSV mark every pixel in range of target color by upper/lower thresholds as 1 and all others 0 do erosion/dilation of image to fill the holes at area marked with 1, in case of noises (optional) do connect component labelling (findcontours) to get the area and its center Upvote 0
Google the thread subject should return many tutorials as this is a basic application for OpenCV. The jOpenCV lib for B4J is encapsulated very well so conversion from the example to B4J line by line should be straight. Basically: convert image colorspace from RGB to HSV mark every pixel in range of target color by upper/lower thresholds as 1 and all others 0 do erosion/dilation of image to fill the holes at area marked with 1, in case of noises (optional) do connect component labelling (findcontours) to get the area and its center
