"Advanced" image processing

"Scott W" wrote:
Alfred Molon wrote:
In article , Ken Tough says...

Why don't you put an example shot on a webpage somewhere, and
challenge readers to do their best at improving the shot. It's
a fun exercise.

Ok, here is the page with the samples:
http://www.ddde.de/enhance/

OK here is my try at it
http://www.pbase.com/konascott/image/69541142
Mine has a over processed feel to it and I have to say I like your
version a lot better.

I disagree. I especially like how the water looks in your version. I suppose
it's oversharpened, but looking at it from 15 inches or so from the screen
(with my eyesight), it looks pretty good.

I'm impressed.

Now if someone would PLEASE straighten it out. That photographer's almost as
dizzy as I am. (Even with the grid focusing screen in my camera, I find
myself using the rotation adjustment a lot.)

David J. Littleboy
Tokyo, Japan

In article ,
Raphael Bustin wrote:

On Tue, 31 Oct 2006 22:12:32 -0500, "Greg \"_\""
wrote:


As someone that has painted since a young age,...and considered being a
professional "artist" I laugh out loud at those feeling contrite at
*******izing two media. My thoughts then say if your going to do
something that totaly crass & disreputable why stop at photo go for some
you could make a lot more money doing....like politics or professional
hit man


Truth be known, I haven't sufficient imagination
to be a great artist, let alone a middling one.
That's why I settled on being an engineer.

I'm also not quite smart enough and/or too lazy to lie.
Lying takes too much mental effort. Lies are like
economies, and need constant compounding.

Hence most of my photo work really is pretty
straight, simply because I don't know better
and can't imagine a suitable embellishment
for the reality.

I'm not above doing a few helpful touch-ups
here and there, though.


rafe b
www.terrapinphoto.com

If I was you I wouldn't myself short, I have respect for engineers and
math people. When pushed I can do math.
--
"As democracy is perfected, the office represents, more and more closely,
the inner soul of the people. We move toward a lofty ideal. On some great
and glorious day the plain folks of the land will reach their heart's desire
at last, and the White House will be adorned by a downright moron."
- H. L. Mencken, in the Baltimore Sun, July 26, 1920.


Reality-Is finding that perfect picture
and never looking back.

www.gregblankphoto.com

In article .com,
Scott W says...

Ok, here is the page with the samples:
http://www.ddde.de/enhance/

OK here is my try at it
http://www.pbase.com/konascott/image/69541142
Mine has a over processed feel to it and I have to say I like your
version a lot better.
This is pretty typical of what I can when I try to make a photo look
like the day was nicer then it really was.

Thanks Scott. You managed to completely remove the haze, but the colours
unfortunately are pretty much gone. Even increasing the saturation does
not help.
--

Alfred Molon
------------------------------
Olympus 50X0, 7070, 8080, E300, E330, E400 and E500 forum at
http://tech.groups.yahoo.com/group/MyOlympus/
Olympus E330 resource - http://myolympus.org/E330/

In article , Paul Saunders says...

How about this?
http://www.wilderness-wales.co.uk/mi..._processed.jpg

It's good - you completely removed the haze. The only problem is that
the colours look a bit unnatural (pink sky and green river). I guess you
can't have everything.
--

Alfred Molon
------------------------------
Olympus 50X0, 7070, 8080, E300, E330, E400 and E500 forum at
http://tech.groups.yahoo.com/group/MyOlympus/
Olympus E330 resource - http://myolympus.org/E330/

Roger N. Clark (change username to rnclark) wrote:
Alfred Molon wrote:

Just curious if anybody knows techniques to substantially enhance
images taken under bad lighting or weather conditions. For instance if
you shot photos on an overcast, dark day, if there is a way to make
these photos shine. Would it be possible to transform an overcast sky
into a nice blue sky?

Or if you shot images under hazy conditions, with poor visibility,
would it be possible to give these images "vibrance", good contrast
and colours and if so how?

Sure. Just buy the CSI photo9shop plugin. ;-)


The Cézanne plugin works well for this, too.

Seriously, Alfred, there are dozens of ways with Photoshop to move
toward what I think you are getting at. Start with copying the bg layer,
and run a few layer mask adjustments onto the copy and see what you come
up with. Play with different opacity levels for those adjustments. Just
for starters.

--
john mcwilliams

Please BE SURE to capitalize IMPORTANT WORDS in case you think your
audience is NOT very bright, or you have a limited vocabulary.

Alfred Molon wrote:
In article , Paul Saunders says...

How about this?
http://www.wilderness-wales.co.uk/mi..._processed.jpg

It's good - you completely removed the haze. The only problem is that
the colours look a bit unnatural (pink sky and green river). I guess you
can't have everything.

Well, not everything, but the sky and river hues can be cured, also.

It occurred to me that leaving the haze in the sky and on the buildings
might be a good thing.

--
john mcwilliams

Here's a two step process to try:
First: Download Lightroom Beta4. Vibrance, contrast and saturation are
available knobs, as well as color temperature. It works in 16 bit, even on
JPEGS. The output is 8bit or 16bit TIFF
Second: open the transformed file in Photoshop (elements is fine)
1. Duplicate the layer
2. FilterUSM50%, R= 50 to 200 (experiment) Threshold =0
3. Vary the blend mode and layer opacity to improve contrast and reduce
the "haze", Monitor the histogram to avoid blocking up shadows and/or
burning out the highlights.
Third: sky color is more difficult. Try to select the sky, then adjust
individual color channels contrast, hue and saturation to transform the gray
sky into some thing more pleasing.

David "Routemeister" Thompson
http://picasaweb.google.com/david.routemeister


"Alfred Molon" wrote in message
...
Just curious if anybody knows techniques to substantially enhance images
taken under bad lighting or weather conditions. For instance if you shot
photos on an overcast, dark day, if there is a way to make these photos
shine. Would it be possible to transform an overcast sky into a nice
blue sky?

Or if you shot images under hazy conditions, with poor visibility, would
it be possible to give these images "vibrance", good contrast and
colours and if so how?
--

Alfred Molon
------------------------------
Olympus 50X0, 7070, 8080, E300, E330, E400 and E500 forum at
http://tech.groups.yahoo.com/group/MyOlympus/
Olympus E330 resource - http://myolympus.org/E330/

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Alfred Molon wrote:

Ok, here is the page with the samples:
http://www.ddde.de/enhance/

Both photos taken in Chongqing (China), one of the most heavily polluted
places on earth. Image 1 shows the Yangtze river and there is heavy
smog.

Here's my attempt. Bit difficult on a laptop screen.

http://www.pbase.com/k_j_tough/image/69575388

I liked boosting the brightness of green even more (gives nice texture
to the water) but it also made it very noisy.

Anyway, I think you need to somehow convey just how gritty Chongqing is,
while cutting through the muddiness somehow.

Interesting challenge! Thanks


--
Ken Tough

Paul Saunders skrev:

Paul
--
http://www.wilderness-wales.co.uk

Spectacular place, and quite unknown outside UK. I leved in Chester for
3 years and did a lot of walking in North Wales

I like http://www.wilderness-wales.co.uk/pg/gl/cf75.jpg - I was there a
day with frost on the rocks (both the cantilever and mine :-), it was
great.

/Martin

On Nov 1, 2:19 pm, Alfred Molon wrote:
In article .com,
Barry Pearson says...

Are you asking for something beyond the sort of LAB processing done by
Dan Margulis in "Photoshop LAB Color -The Canyon Conumdrum and Other
Adventures in the Most Powerful Colorspace"? Figure 9.15 shows the use
of LAB to get through the haze in Hong Kong.

Do you have a link? I've never tried this sort of processing.

Try a Google search for "The Canyon Conundrum" (NOT "Conumdrum" as I
spelt it above!)

http://www.amazon.com/Photoshop-LAB-.../dp/0321356780


http://www.peachpit.com/bookstore/pr...321356780&rl=1

http://www.ledet.com/danmargulis/?ve...is&product=LAB

I'm sure I've seen a forum or similar based on this, but I don't know
where I saw it.

--
Barry Pearson
http://www.barry.pearson.name/photography/