So, here is a view of the most expensive image ever (that doesn't really exist - except for now because I made it):
This is an amalgam of 16 (out of 18) of the most expensive photographs ever sold, all at once (based on the list at Wikipedia).
I averaged all of the images in Imagemagick, and brought them into GIMP for some level adjustments and minor processing.
Mr. Presidents
I've been pretty busy lately, and haven't had a chance to post anything, but that doesn't mean I haven't been fooling around when I can! Here's a finished blended amalgam from the other night:
This is every one of the U.S. Presidential portraits (except one) all blended in Imagemagick. Once using an average, and a second one using median blending. I brought these into GIMP and overlayed the median blend at 50% opacity.
This is every one of the U.S. Presidential portraits (except one) all blended in Imagemagick. Once using an average, and a second one using median blending. I brought these into GIMP and overlayed the median blend at 50% opacity.
HDR Photography with F/OSS Tools (LuminanceHDR)
I was absolutely not going to bother covering this topic. Then I started a conversation with +Dan Tauro in this thread on the GIMP Users Community in G+...
The reason is that I've had mostly a love/hate relationship with HDR images (well, tonemapping HDR more than the HDR themselves). I think the problem is that it's really easy to create really bad HDR images that the photographer thinks look really good. I know because I've been there:
Don't judge me, it was a weird time in my life...
The best term I've heard used to describe over-processed images created from an HDR is "clown vomit" (which would also be a great name for a band, by the way).
They are easily spotted with some tell-tale signs such as the halos at high-contrast edges, the unrealistically hyper-saturated colors that make your eyes bleed, and a general affront to good taste.
In fact, while I'm putting up embarrassing images that I've done in the past, here's one that scores on all the points for a crappy image from an HDR:
Crap-tastic! Of course, the allure here is that it provides first timers a glimpse into something new, and they feel the desire to crank every setting up to 11 with no regards to good taste or aesthetics.
If you take anything away from this post, let it be this: "Turn it DOWN". If it looks good to you, then it's too much.
The reason is that I've had mostly a love/hate relationship with HDR images (well, tonemapping HDR more than the HDR themselves). I think the problem is that it's really easy to create really bad HDR images that the photographer thinks look really good. I know because I've been there:
Don't judge me, it was a weird time in my life...
The best term I've heard used to describe over-processed images created from an HDR is "clown vomit" (which would also be a great name for a band, by the way).
They are easily spotted with some tell-tale signs such as the halos at high-contrast edges, the unrealistically hyper-saturated colors that make your eyes bleed, and a general affront to good taste.
In fact, while I'm putting up embarrassing images that I've done in the past, here's one that scores on all the points for a crappy image from an HDR:
Crap-tastic! Of course, the allure here is that it provides first timers a glimpse into something new, and they feel the desire to crank every setting up to 11 with no regards to good taste or aesthetics.
If you take anything away from this post, let it be this: "Turn it DOWN". If it looks good to you, then it's too much.
G'MIC Image Averaging Made (Relatively) Easy
I hesitate to mention G'MIC in a title sometimes because I feel that whatever I write is not going to do it justice. For this post, I couldn't resist.
I really should have posted this a while ago when I first saw it, but to be honest it slipped under my radar. So I'm trying to catch up and make amends.
+David Tschumperlé was kind enough to post today a link to some incredible work done by Jérome Ferrari with more averaging images. (It is seriously incredible).
A neat result using -compose-edges in G'MIC
This time everything was done entirely in G'MIC. The images are aligned on the eyes automatically using a little cropping and phase correlation, then scaled to fit both eyes. The results are fantastic.
They are also way faster than doing it my way (aligning eyes and scaling to fit by hand in GIMP).
Head on over and check it out:
Averaging face photos : eye alignment
Also, be sure to check the follow up where there are some slight distortions applied to align the mouths as well.
I really should have posted this a while ago when I first saw it, but to be honest it slipped under my radar. So I'm trying to catch up and make amends.
+David Tschumperlé was kind enough to post today a link to some incredible work done by Jérome Ferrari with more averaging images. (It is seriously incredible).
A neat result using -compose-edges in G'MIC
This time everything was done entirely in G'MIC. The images are aligned on the eyes automatically using a little cropping and phase correlation, then scaled to fit both eyes. The results are fantastic.
They are also way faster than doing it my way (aligning eyes and scaling to fit by hand in GIMP).
Head on over and check it out:
Averaging face photos : eye alignment
Also, be sure to check the follow up where there are some slight distortions applied to align the mouths as well.
Noise Removal in Photos with Median Stacks (GIMP/G'MIC & Imagemagick)
In my recent experiments and playing around with even more image averaging in Imagemagick, I decided to have a look at some other methods for calculating pixel values. This time I focused on stacks of images of the same thing.
Why the same thing?
f/8 @ 1⁄100 sec., ISO 25,600 (mouseover to compare straight out of the camera)
Because the (uninspired) above image was shot at ISO 25,600. Go look at it again.
Why the same thing?
f/8 @ 1⁄100 sec., ISO 25,600 (mouseover to compare straight out of the camera)
Because the (uninspired) above image was shot at ISO 25,600. Go look at it again.
Bouncing Baby Beverly Tutorial (Making Babies Fly)
Way back in November, 2011 I had written a tutorial for PetaPixel that walked through how I created the image of my daughter bouncing out of her crib:
I realized that the tutorial only existed over on PetaPixel, and that I should probably just put a copy of it here for anyone interested. So here it is.
I realized that the tutorial only existed over on PetaPixel, and that I should probably just put a copy of it here for anyone interested. So here it is.
Using Imagemagick to Create Contact Sheets (Montage)
In my previous post on postprocessing my Open Source portrait, I had shown a couple of contact sheets that I had generated to help me narrow down which images I liked. That contact sheet looked like this:
Contact sheets are a great holdover from the days of film, when you wanted a big overview of all the shots on a strip of film. After developing the film, you could just lay a sheet of photo paper under the enlarger, lay your strips of film on top, put a glass plate over the whole thing to hold them down, and then expose with white light for a small amount of time.
Contact sheets are a great holdover from the days of film, when you wanted a big overview of all the shots on a strip of film. After developing the film, you could just lay a sheet of photo paper under the enlarger, lay your strips of film on top, put a glass plate over the whole thing to hold them down, and then expose with white light for a small amount of time.
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