ImageSearch finds picture once but not twice or more

[Roswiitha]

Hello there, 

I am currently using ImageSearch UDF Version 2021.8.30.1, AutoIt 3.3.16.0 on a Windows 11 machine. With the code shown below, I am able to move my mouse to the picture I search "picture.bmp" without a problem. If I start the script again with no changes in the script, it will not find the same picture again until, I restart the PC or re open the window with the picture in it. I want to search the picture x times and sometimes twice in a row. I thought about a cache problem, but didn't found any topics about that. Any ideas?

I am using AutoIt not for the first time but I am still a beginner, go easy on me 🙌

Local $_Image_1 = @ScriptDir & "\images\picture.bmp"
Local $return = _ImageSearch($_Image_1)
    If $return[0] = 1 Then
        $return[0] = 0
        MouseMove($return[1], $return[2])
    EndIf

 

[Zedna]

Probably picture slightly changes (just little or only some pixels) after Mouse hover (over image) or after getting focus.

[Roswiitha]

@Zedna Thanks for the fast reply.

I checked it again, the picture doesn't change after searching it. The mouse is also not in the search area. I guarantee you, it doesn't change.

[junkew]

How and when is the picture.bmp created? 

Did you do a pixel compare if its based on screenshots from different pointe in time?

[Zedna]

Try to use PixelChecksum() before/after your ImageSearch/MouseMove to check if target (pixels) area really doesn't change.

[Roswiitha]

14 hours ago, junkew said:

How and when is the picture.bmp created? 

Did you do a pixel compare if its based on screenshots from different pointe in time?

The picture.bmp does always exist. I took a screenshot and saved the file as .bmp. The picture.bmp is not created with the script.

I did a pixel compare after it is found, the pixel does not change.

[junkew]

Do a mousemove 1,1 or 0,0 before you search. Most likely your screen is changing after a mousemove. You are searching the screen so any pixelchange in either image2search or imagesearchingin will give a mismatch.

[Zedna]

Try to use $tolerance parameter (increase its value from 0) in _ImageSearch().

[robertocm]

Try with the OpenCV library