proposal - script shooting hooks - page 21 - General Discussion and Assistance

c_joerg

1251

Re: proposal - script shooting hooks

« Reply #200 on: 20 / July / 2015, 07:40:17 »

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Attached are updated versions of rawopint and contae. There are no changes to functionality, but they will see the correct blacklevel dependent values on G1x when it changes. I'm not sure if this will result in correct behavior, and it still doesn't account for the other ISO change at 400.

So a run on G1X until ISO399 should be OK…. but together with the ‘Set ISO mode Script’ from isoinc should be handle both problems on G1X … so test this might be helpful?

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reyalp

14117

Re: proposal - script shooting hooks

« Reply #201 on: 20 / July / 2015, 16:06:20 »

Quote from: c_joerg on 20 / July / 2015, 07:40:17

So a run on G1X until ISO399 should be OK

Possibly. I'm not sure if the neutral and meter calculations are still valid after the blacklevel switch.

Quote

but together with the ‘Set ISO mode Script’ from isoinc should be handle both problems on G1X …

Not quite. With the "script" method, the exposure seen in the raw buffer drops after ISO400. It acts as if the actual sensor ISO was reduced back to 200 and +1 ev compensation is added back in jpeg processing. This will throw off metering, since it operates on the raw data. In theory, it should be possible to detect and compensate for this, but it would require more code changes.

One thing that would probably be worthwhile is writing a script that dumps all the propcases before and after the transitions (both blacklevel and the ISO thing). If there's something we can query to definitively know which state the camera is in, that would simplify things a lot, and perhaps even allow us to fix it generically in C code instead of script workarounds. I'll try to come up with something like this when I have some time.

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c_joerg

1251

Re: proposal - script shooting hooks

« Reply #202 on: 25 / July / 2015, 09:17:02 »

I have problems running rawopint (also isoinc) with R4193 on S110…

S110_R4193_Error.jpg (579.7 kB, 1708x448 - viewed 39 times.)

rawopint.csv (0.26 kB - downloaded 17 times.)

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reyalp

14117

Re: proposal - script shooting hooks

« Reply #203 on: 25 / July / 2015, 14:46:19 »

Quote from: c_joerg on 25 / July / 2015, 09:17:02

I have problems running rawopint (also isoinc) with R4193 on S110…

Are you certain you are using the script from post #199 http://chdk.setepontos.com/index.php?topic=11081.msg123560#msg123560 and also the CHDK directory files from r4193?

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c_joerg

1251

Re: proposal - script shooting hooks

« Reply #204 on: 25 / July / 2015, 15:48:55 »

Sorry, I forgot to update the script. With Version 0.17 it is running…

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c_joerg

1251

Re: proposal - script shooting hooks

« Reply #205 on: 27 / July / 2015, 05:53:42 »

I made a new run on G1X with R4193 on really hard condition. Extremely fast moving clouds.
I think the interval from 3s was still too high.
A couple of times the run is controlled by overexposure.
Rawopint does a really good job…

http://youtu.be/7WEHsPb9ENQ

G1x_rawopint_test_R4193.png (40.1 kB, 2400x1801 - viewed 38 times.)

rawopint.csv (387 kB - downloaded 13 times.)

« Last Edit: 27 / July / 2015, 14:16:19 by c_joerg »

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c_joerg

1251

Re: proposal - script shooting hooks

« Reply #206 on: 12 / August / 2015, 05:42:37 »

This is one of my latest runs on S110 with rawopint (rawopint_wm4) on S110. I thought the scene should be easy because not much changes, no moving clouds and nothing against the sun. I also reduced max ev changes.
I was wondering that I got a flicker (not much on it). You can see it especially when you are concentrated on the sky

https://youtu.be/UZBKzCky6wc

I analyzed the data.

I think there is no overexpose control at all.
When you see the plot of meter96, you see parts, where it gets oscillated. The amplitude is not much.
On the second plot I compared a part of meter96 with the JPG pictures. You see the same oscillation in the pictures. The changes are not much, but the oscillation made the flicker.

Where das the oscillation come from? May be from the surface of the water. The meter window is default but probably 50% of the meter window is water at the beginning. When the water goes higher and more waves coming in, flicker increases. I’m still thinking, if an option to move the meter window could be helpful.

For ui_draw_meter_t an option { None Corners Box FirstPictureBox}, to plot a box on the first window would be really helpful for analyzing.

I made a second run to the same time with G1x (rawopint_wm3). This run show also flickers but smaller as from S110. Here the meter window is on the beginning more outside from the water. When the water comes up, also here the flicker increases.

I’m not sure, if this can help, to avoid oscillation:
As long as meter96 is in a specific range (may be +-8 values or selectable EV range), rawopint should not change any exposure. Exposer should only be changed, when meter96 is outside this range (or on overexposure).

rawopint_wm4.png (33.88 kB, 2400x1801 - viewed 36 times.)

rawopint_wm3.png (24.14 kB, 2400x1801 - viewed 36 times.)

« Last Edit: 15 / August / 2015, 06:38:29 by c_joerg »

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c_joerg

1251

Re: proposal - script shooting hooks

« Reply #207 on: 12 / August / 2015, 05:46:00 »

An the zip file...

rawopint.zip (75.46 kB - downloaded 18 times.)

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c_joerg

1251

Re: proposal - script shooting hooks

« Reply #208 on: 15 / August / 2015, 06:36:12 »

This is my first run on SX230 with rawopint.

https://youtu.be/krilj4H_4lM

Generally it works very well. Results looking similar to S110.

I see the same oscillation as on the other cams. It is really not much and it is not really seen on the video, because the scene is more changing as the scene on S110.

Also with the last run on S110: It is really if difference, watching the video on YouTube or seeing it with lower compression on a 55 inch flat screen. With a deflicker filter on VirtualDub it can be eliminated. But sometime this filter shows other effects.

Is somebody here who has a source code for some deflicker filter? I thought I have even to change the brightness, but this will not give very good results…