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Atomfritz
Atomfritz is offline
#12458
Mar2-12, 03:17 AM
P: 74
Regarding the strange image distorting/tile duplication which makes the impression of image editing:

I have looked at the video and the image closely trying to find out what could be the reason for this.

Just to save typing I copied my comment on Ex-SKF here:
Now downloaded the video and looked at it closely.
Around 3:10 plus/minus a few seconds there can be taken some more observations.

As Yosaku correctly notes, the image is parted up into 16 tiles, apparently transmitted sequentially, strangely of unequal size (would really like to know the technical reason why the tiles aren't equal-sized).

The image "blacks out" when the radiation counter jumped to about 0.2 sieverts (in 1 meter height? probably then higher near at floor level where the electronics are probably located).

The operator then hastily moved back Quince. I suppose it was a quick reaction to protect Quince 2 from crashing/latching-up because of radiation.

However, what appears strange to me is the discrepancy of the image shown in the video and the high-res image.
But there could be several benign technical explanations for this.
The display on the Quince control panel (showed in the video) is probably a zoomed-down version of the native resolution of the camera image.

But then the question comes up: how came the seamless impression of the duplicate tile which makes the impression of image editing?
If the tile was a simple duplicate as Yosaku assumes, it would be easily recognizable, like a copied-pasted part of the image.

It is probably not that simple.
When you look very carefully at the hires image you get the impression that the lower left tile actually could be sort of averaging overlaying of two tiles.
Technically this could be caused by a line decoder malfunction caused by radiation, leading to two lines being read out simultaneously, mixing/averaging the output.

So I have to retract my suspicion of image editing, as there seems to be nothing of particular importance in the lower-left image tile.

However, one thing can possibly be concluded of this: Quince's electronics radiation resistance probably is around 0.2 sieverts (assuming the radiation counter is located near the electronics)
I fear Tepco has to be very careful to avoid Quince 2 to die soon too.
Any thoughts/comments about this?