Haze reduction

GW
Posted By
Garline_Wheatley
Jun 6, 2007
Views
403
Replies
6
Status
Closed
Need suggestions re reducing haze in PS3, Windows XP

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CC
Christopher_Carvalho
Jun 6, 2007
Try this:

Unsharp mask, amount= 6 to 12%, radius= 70 pix, threshold=0.

Vary the amount to achieve best reduction without causing halos at extreme light-to-dark edges in the image. You can increase radius somewhat in very large images or decrease it in very small ones.

Or try an adjustment layer that increases contrast of the image as long as it does not make the shadows or highlights excessively compressed.
GW
Garline_Wheatley
Jun 6, 2007
Thank you so much for the tip. So far the best I’ve been able to get is by using 20%, Radius 60 and Threshold 4 plus an S curve. This is for an slide scan of at white boat at Catalina with the hills in background that was taken in 1982. I have a copy that says I used a Haze Filter (on the tiff, not on the camera) that is better, but have no idea how I did it. Getting old is not good for the brain!
Any other suggestions would be greatly appreciated.
Garline
RK
Rob_Keijzer
Jun 6, 2007
Can you post (a reduced rendition of) the image at <http://www.pixentral.com/> ? Some of us might have a go at it and describe how it’s done.

Rob
CC
Christopher_Carvalho
Jun 6, 2007
Haze is often more in the blue channel of an image. In addition to the steps above, you can also try reducing the blue channel by applying a curve if it does not make the image start to look too yellow. This is often what haze filters do.

Often the best curve to use is to simply select the middle of the curve, place a control point there, and drag it down and to the right until a good result is achieved.
GW
Garline_Wheatley
Jun 6, 2007
Rob,thanks for the offer. I sent the picture K-89 82.jpg. Normally it would not be worth the trouble to correct, but good memories become more important the older you get.
All suggestions are appreciated and will be tried.
MD
Michael_D_Sullivan
Jun 7, 2007
Garline, if you post a picture to pixentral, you need to copy the information on where it can be found and post it here. Otherwise it is lost in the ether, so to speak — just another unfindable image on pixentral’s disk drive array. Below the picture are two boxes with code. Copy the code marked HTML, as indicated, by clicking in the box, then type ctrl-A and ctrl-C:

< http://www.pixentral.com/show.php?picture=1UNiMEOfA8elssbVRy RyFrsHbsbTAq>

Paste here. It will look something like:

<a href=" http://www.pixentral.com/show.php?picture=1UNiMEOfA8elssbVRy RyFrsHbsbTAq"/><img alt="Picture hosted by Pixentral" src=" http://www.pixentral.com/hosted/1UNiMEOfA8elssbVRyRyFrsHbsbT Aq_thumb.gif" border="0"/></a>

And this will turn into a thumbnail image like the one above that, when clicked, gets you to the real thing.

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