can't zoom in and out

[BahaaMansour]

No description provided.

[Cartucho]

Most likely you installed OpenCV without QT. Which OpenCV version are you using?

[BahaaMansour]

latest version
what is QT?

[Cartucho]

So you are using version 4.0.1. Which OS are you using? How did you install it... with pip install?

[sakthigeek]

Any fix to Zooming in and zooming out? I'm using python 3.6, opencv-contrib-3.4 on windows.

[Cartucho]

Hello! So to summarize OpenCV is planning on dropping the QT requirement and implement their own Zoom In and Zoom Out (they announced it as a GSoC project).

If you wanted to use QT on Windows you would have to manually install OpenCV, instead of using pip install, but, that would be an arduous task.

I am planning on dropping the OpenCV interface and move it to tkinter and implement the zoom by myself.

[Cartucho]

Hello guys, I have good news OpenCV is now removing the QT dependency in Google Summer of Code 2019. This issue will be fixed by this summer.

[OzgunKB]

I installed OpenCV. Zoom does not work.

[maayanYa]

Hi ,
The tool is great ! But the zoom in/out problem is critical in large images annotation task.
Is this issue will be fixed soon ?

Thank You