Select only object from a image and display it to another window with transperent background

[swansorter]

hi

i want extract object from an image with multiple object and display it to another window with transparent background.
this is example image i want to display any one of the cashew from the image

[J.Hilk]

@swansorter
seems like you already had a very, very similar situation before

https://forum.qt.io/topic/120343/how-to-select-only-object-from-the-image?page=1

just because the image is different doesn't mean the solution is different.

[swansorter]

@J-Hilk
i am still not able get the solution..
do you have solution for it?

[jsulm]

@swansorter In your other thread it was already mentioned that there is nothing in Qt for such use cases. You have to look for some libraries for image recognition.

[swansorter]

@jsulm is it possible make image background transparent

[jsulm]

@swansorter What exactly do you mean: that parts of your image is transparent or whole image?

[swansorter]

@jsulm i want to make background of the image transparent (like background subtraction)
part of the image only

[swansorter]

This post is deleted!

[swansorter]

@jsulm like this
input image:-

output image :-

[swansorter]

@jsulm is it possible

[jsulm]

@swansorter Yes. See https://doc.qt.io/qt-5/qtwidgets-painting-composition-example.html example (flower.jpg + flower_alpha.jpg)

[swansorter]

@jsulm it converts whole image to transperent

[SGaist]

Hi,

Learn OpenCV and do background removal as explained there.

[swansorter]

@SGaist cross compiling opencv+qt showing error.so i decided do it manually