PureBasic Forums - English

There are many programs available that can remove the background of a photo (with a bit of work of the User).

Has anyone written functions in PB to do this, where the image is set on a Canvas Gadget?

I understand not the question ?

Saki wrote:I understand not the question ?

He wants to know how to make your avatar look like this, by using code:

IdeasVacuum wrote:Has anyone written functions in PB to do this

The closest I've seen is by Dobro here -> viewtopic.php?f=12&t=69613

Ah, I see.
It always depends on whether it is a photo or an image, whether the crop should be rectangular or freely pixel-exact.
If the colors of the image and the background differ, you can have it done automatically.
In GFX_Wizzard_BF there is the function FloodFill_BF.
You can set a Color Distance value there, then everything in a certain color spectrum will be replaced with a color or transparency.
This corresponds to an outline calculation.
If there is no outline, this does not work, of course.
But this is not a small function that you can separate, because it is very, very complex and has dependencies.
A stamp function is quickly made, it also depends on whether it should be a copy stamp or an eraser.
That needs then still another magnifying glass or zoom.
So nothing that you can do just so quickly

The function "TextureBrush_canvas_BF" (Photo_merge.pb) can do this without a magnifying glass,
but it must be adapted to the requirements, it is only a function (With included stepples undo) and not a tool.

The closest I've seen is by Dobro here -> viewtopic.php?f=12&t=69613

That is a very nice solution, I can work with that, thanks BarryG.

IdeasVacuum wrote:

The closest I've seen is by Dobro here -> viewtopic.php?f=12&t=69613

That is a very nice solution, I can work with that, thanks BarryG.

It works not with scalings >100%

Hi IdeasVacuum,

It sounds like you have very specific requirements and have found a suitable method, so the following solution is for reference only.

The two methods I'm familiar with are watershed segmentation and grabcut segmentation.

Watershed Segmentation

It works not with scalings >100%

That is relatively easy to add, via the Vector Lib. This though is one of the areas where a 32bit Canvas supporting transparency and layers would be more fun.

You can use Vector Curve Designer for that.