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All about camdriver modding (for modders) |
number1
Joined: Sep 12, 2007
Posts: > 500
From: UK,kent,Sittingbourne
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k800i just doesn't have fast macro or anything it has different focus settings the k750i,
the bilinear filter should be abled to be turned off there must be a command for it like in the k750i. |
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Raiderski
Joined: Jul 03, 2006
Posts: > 500
From: Poland, Hell, Mountains
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k800i just doesn't have fast macro...
and you know this from... ?
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number1
Joined: Sep 12, 2007
Posts: > 500
From: UK,kent,Sittingbourne
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k800i just has 4 focus settings
#SET_REG(32,00) normal
#SET_REG(32,01) macro
#SET_REG(32,04) multiple AF windows, normal
#SET_REG(32,05)multiple AF windows, full range
i'm pretty sure thats it unless #SET_REG(32,03) might be something or maybe #SET_REG(32,06).
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Raiderski
Joined: Jul 03, 2006
Posts: > 500
From: Poland, Hell, Mountains
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only because you can see 4 values (reg can have 255) in driver? if i don't see manual shutter speed in driver's code does this mean that it doesn't exist? in my opinion macro only range is somewhere but this isn't as obvious as other ranges. i prefer to use "hidden somewhere" than "doesn't exist"
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number1
Joined: Sep 12, 2007
Posts: > 500
From: UK,kent,Sittingbourne
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i also want the bilinear filter off, how would be the best way to test for the command which controls the bilinear filter. |
Raiderski
Joined: Jul 03, 2006
Posts: > 500
From: Poland, Hell, Mountains
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in k750 this was cmd5B (0 = enabled, 1 = disabled) but this doesn't work on k800. it's hard to search proper command and value simply because of some commands which co-work with registers (this from my reg table at 4shared account). in this case good testing & searching procedures are priceless... and of course a lot of luck
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Raiderski
Joined: Jul 03, 2006
Posts: > 500
From: Poland, Hell, Mountains
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OMG i just realized how poor is autofocus in K800. W800 can entirely kick his balls in every aspect of work 
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jomateixa
Joined: Dec 09, 2007
Posts: > 500
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On 2008-02-12 14:45:58, Raiderski wrote:
OMG i just realized how poor is autofocus in K800. W800 can entirely kick his balls in every aspect of work
Can you explain that a little more? |
number1
Joined: Sep 12, 2007
Posts: > 500
From: UK,kent,Sittingbourne
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i thought the k800 autofocus was a bit poor comparad to my k750i, also this was found in the k770
http://www.4shared.com/file/37570218/ec7b9ba6/cam_fw_upgrade.html
have a look at it, it's very odd some kind of half camdriver |
number1
Joined: Sep 12, 2007
Posts: > 500
From: UK,kent,Sittingbourne
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@raiderski, have you managed to turn off the k800i's bilinear filter???? |
Raiderski
Joined: Jul 03, 2006
Posts: > 500
From: Poland, Hell, Mountains
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not yet, i hadn't enough free time
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number1
Joined: Sep 12, 2007
Posts: > 500
From: UK,kent,Sittingbourne
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the Bilinear filter has got to go i researched it today
http://wiki.beyondunreal.com/wiki/Bilinear_Filtering
if you look at photos taken with the k800 Bilinear Filter on then look at pics taken with the k770i & t650 Bilinear Filter off, you can clearly the affect.
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sadeghi85
Joined: Oct 13, 2007
Posts: 341
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no i don't agree with you number1
from that pic showed in k770 vs k810i thread it is obvious that sharpness is high.
bilinear filter is actually a low pass filter, and from that webpage you found you can see aliasing effect in "3x Scale Point filter" image and antialiasing effect(low pass filter) in "3x Scale Bilinear filter", and sharpness is actually high pass filter! low pass and high pass filter in the same time?!!
so i can conclude that that isn't bilinear effect on K800i.
and still i can't understand how bilinear filter will work when there is no resizing 
see this page:
http://www.dca.fee.unicamp.br/dipcourse/html-dip/c6/s6/front-page.html |
jomateixa
Joined: Dec 09, 2007
Posts: > 500
From:
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Damn...the low pass filter interpretation of the interpolation is purely a mathematical point of view, our K800 is not doing fourier transforms. You can't think on interpolation only as a low pass filter, but as a low pass filtered spectrum of an expanded DFT. In practice, interpolation is a geometrical problem in what we calculate average distances/colours.
[ This Message was edited by: jomateixa on 2008-02-14 17:15 ] |
sadeghi85
Joined: Oct 13, 2007
Posts: 341
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Ok, our K800 is not doing fourier transforms, but bilinear filtering is a low pass filter that works in spatial domain with the method called "convolution". it's actually a weighted matrix, sliding as a 'window' on the image(that can be considered as another matrix). on that webpage i provided you can see that weighted matrix(bilinear kernel).
read Digital Image Processing by Rafael Gonzalez chapter 3. |
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Posted: 2008-02-09 20:45
