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cta-wave / dpctf-tests

Repo for DPCTF Tests. We prefer to keep the Tests separated from Test Runner
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consider replacing peak black and peak white backgrounds with something in the middle #201

Open jpiesing opened 1 month ago

jpiesing commented 1 month ago

We've seen that cameras take time to adjust when the display switches from a peak black background with white text or a peak white background with black text to the test material. For the particular case of peak black backgrounds used at the start of a test, this causes problems when the test starts as the white in the QR codes is over-exposed and burnt out. Please consider replacing the peak black and peak white backgrounds with a grey background somewhere in the middle.

louaybassbouss commented 1 month ago

@jpiesing are these tests audio-only? If yes, we noticed also this behaviour and our idea to use a suitable background image of the video element (maybe using video.poster).

jpiesing commented 1 month ago

@jpiesing are these tests audio-only? If yes, we noticed also this behaviour and our idea to use a suitable background image of the video element (maybe using video.poster).

Well the white text and/or QR code on a majority black background and black text on a white background are common to all tests. I don't have a strong opinion about using a picture vs using a plain mid-grey background. Anything that 1) reduces a white QR code on a black background being almost burnt-out and 2) reduces the first second(s) of video being burnt out before the camera adjusts.

image

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louaybassbouss commented 1 month ago

Something like this?

image
jpiesing commented 1 month ago

Something like this?

image

That's the less critical one but, yes, that will certainly avoid the camera having its sensitivity turned down to the maximum.

louaybassbouss commented 1 month ago

yes this was something I can quickly do in the browser dev console, but yes it should be applied to both pages. We will do it.

yanj-github commented 1 month ago

@louaybassbouss In case you have used autofocus on camera try use manual focus next time it will help.

louaybassbouss commented 1 month ago

@yanj-github We disabled all automatic features on the camera, including auto-focus, but this still occurred.

jpiesing commented 3 days ago

Has this been done, both for "next test is about to start" and for the video element before any video is displayed?