Updated IQ

Falsificator said:
... Less sharp screenshots show the maximum level
details, and those that seemed sharp are hopelessly spoiled by a sharpe and lost in detail.
This is what producers & managers do in advertising. In YouTube reviews, the picture appears sharp and
detailed, but as soon as you start to watch the originals in full size,
then you involuntarily think: "Excuse me, but where is the quality???"...
Click to expand...
Yes, and besides, the bit rate also affects the quality of the picture.
Currently, the B4K flow rate for UHD is only 27,1 Mbit/s (which is extremely low), and it is required to at least double this figure for 4K.
(This is an indicator of the total bitrate. For 2560x1440 it is 15.0 Mbit / s, and for 1920x1080 it is 8.66 Mbit / s).
 
Another small test - comparison of the Original v009 - 4K (3840x2160) and modified firmware - 4K (3840x2160) and 1440 (2560x1440)
v009 4K EV= 0.0
2_v009_jeely-2.jpg
Mod 4K EV= 0.0
2_4K_MOD_jeely-2.jpg
Mod 1440 EV= -1/3
2_1440_MOD_jeely-2.2.jpg
v009 4K raw video here (1 min / 193,6 MB) EV= 0.0
1_v009_jeely.jpg

MOD 4K raw video here (1 min / 301,4 MB) EV= 0.0
1_4K_MOD_jeely.jpg

MOD 1440 raw video here (1 min / 301,4 MB) EV= -1/3
1_1440_MOD_jeely.jpg
 
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Falsificator said:
Blueskysea B4K v009 MOD - Bitrate, Contrast, Sharpness, Gamma, DE, Others...
boosty.to

Blueskysea B4K v009 MOD - Kaliningrad

Blueskysea B4K v009 MOD - Bitrate, Contrast, Sharpness, Gamma, DE, Others...
boosty.to boosty.to
Click to expand...
Hi @Falsificator , I see there are newer versions of - Blueskysea B4K v015 MOD released Feb2023 - is there any newer changelog showing what these releases have?

I am using B4k_20220113_V015 firmware and timelapse in parked mode at 1FPS. I have had two incidents when the car is parked, both of which were captured by the front camera but the image is not sharp enough to capture the number plate. I have since noticed that there is 2/5/10 FPS timelapse mode and have moved to 10 FTP timelapse mode. edit: (parking mode timelapse seems to be fixed at 1FPS)

For example here is the attached image where the number plate is not clear (extracted frame using avidemux), and the info on the timelapse video produced by the b4k. Would your version of the MOD firmware improve the ability of timelapse parking mode to get sharper images especially with number plates ? any ideas of any image processing techniques to try and better identify the number plate from attached image? - it is very blurred (not sure if it is reflection and lack of CPL filter?) and I'm not very hopeful of being able to "decode" the number plate.

Code: 
=====================================================
Video
=====================================================
Codec 4CC:                H265
Image Size:                1920 x 1080
Aspect Ratio:            1:1 (1:1)
Frame Rate:                30.000 fps
Average Bitrate:        8389 kbps
Total Duration:            00:02:59.933
Pixel format:            YUV 4:2:0, 8-bit
Color range:            Full (JPEG)
Color primaries:        BT.709
Transfer characteristics:    BT.709
Color space:            BT.709


Also in the settings menu on the camera itself there is a numberPlate option that can be turned on/off. It was set as off for my (I think by default). i have checked the manual pdf and also searched this forum, and I couldn't find what exactly this option is supposed to do. I didn't see this option in the ucam android app 1.9.4.02 (11th oct 2022). Anyone know what its supposed to do?
 

Attachments

  • reg_truck.png
    reg_truck.png
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I can’t say anything about the time-lapse mode, since I’ve never had this recorder
and I can’t answer for all video modes. With one user from Russia who had this recorder,
we were able to create firmware that improves the quality of video in the main modes.
I don't have an answer to your question, sorry...
 
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