Does plugin "Images " support to find part image which comes from one full screenshot?

[billychen2014]

hello,

"Images" finding is amazing function , i did some testing against it:

1. try to find using 'find_element_by_image（full screenshot png file）' ==> result is ok
2. try to find using 'find_element_by_image（part of full screenshot png file）' ==> result is fail

so, it looks like the image finding only support full screenshot finding till now? [i also tried the update driver setting such as 'fixImageTemplateScale' etc ]

the picture like below:

[Higgens75]

Maybe i missunderstand your meaning of "part of full screenshot" but for me the function works.
I can find parts of the screen (i.e. a button) with a picture from this button.

driver.findElement(AppiumBy.image(imagePathBase64("button_picture.png")));

[Higgens75]

I capture the whole screen before with appium and than snip it with the funtion above.

File newBaseline = driver.getScreenshotAs(OutputType.FILE);
BufferedImage newBase=generateImageByCoords(newBaseline);
File outputfile = new File(baselineFilename);
ImageIO.write(newBase, "png", outputfile);

[Higgens75]

and you should use the similarity funtions, there you can get a result screen which shows the differences between both images.
with the findelementByImage you get only a NotFoundException which is not very helpfull.

[billychen2014]

hmm, i just did a test like what you said:

1. using driver.save_screenshot ==> got the full screenshot named full.png
2. using capture function(write by my self ) to get part.png
3. using driver.find_element_by_image("./part.png")

it looks like it always did not works .hmm, maybe python did not works well .

appium: 2.0.0-rc.4
testing device: iOS
python client

[Higgens75]

as i wrote, the notFoundException is not very helpfull in this scenario.
You should try the Image comparison commands from the first tutorial, where you can get some detailed output what has not worked or where the differences between both images are.

[billychen2014]

hmm, it looks like need to add one setting : "fixImageTemplateScale":True

after doing this ,the finding function works well.

thanks a lot