Not Your Everyday Banana

by Bart Arondson

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Image processing is the computational transformation of an image signal. It's about the technical side of batch transformations, conversions, and enhancements, as distinct from post-processing (adjusting an image to achieve a desired look, probably using image processing).

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47
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12answers
27k views

What tools are available for RAW image processing in Linux?

I have been taking photographs with RAW format. What tools are available for working with RAW under Linux?
25
votes
2answers
3k views

How does exposure fusion work?

I understand that "exposure fusion" is a method for combining different exposures into a single image. How exactly does it work, and how is it related to HDR?
24
votes
4answers
635 views

What are Color Profiles and where would I find information on using them properly?

I see the term "Color Profile" a lot and I have this vague idea that it helps you adjust color values based on the unique differences of both cameras, displays and printers from some ideal device. ...
18
votes
7answers
3k views

Other than the iMac, what's a brilliant display for my images?

When I started researching gear to start my photography passion I fell in love with the large iMac display. The large bright screen at the best buy was showing a sideshow if images that looked better ...
12
votes
1answer
1k views

Is it possible to print a photo so it can be mounted on a globe?

I'd like to transform an image so that it can be mounted on a sphere. I'd like to use an image of a map (see the One Piece world map on the image), but it could be anything. Here is a kind of Family ...
11
votes
12answers
774 views

What noise removal tools work best, and why?

Can anyone recommend some good noise removal tools, free and commercial? Should support RAW and JPEG. Are certain tools better than others in particular situations? Do some integrate better with other ...
9
votes
4answers
5k views

Why is a physical anti-aliasing filter still needed on modern DSLRs?

I understand the purpose of the anti-aliasing (AA) filter is to prevent moire. When digital cameras first emerged an AA filter was necessary to creat enough blur to prevent moire patterns. At that ...
7
votes
2answers
925 views

Where can I develop 110 film?

Where can I develop 110 film from my Pentax 110 SLR?
12
votes
3answers
2k views

Is it possible to make a single still photo from a video?

The idea comes from the fact that in astronomy (amatorial), it's common to take videos from a telescope with a webcam and convert them into a single, less noisier picture. The principle is that of ...
15
votes
3answers
3k views

Can software auto-detect image focus?

I was wondering if there was any photo management software out there that could auto detect and "rate" images on how in focus they are. This comes up for me quite commonly when i am looking through a ...
8
votes
2answers
651 views

How can I “focus peak” a photograph?

Does an application exist where I can input an image and then the application indicates what parts of the image are in focus? I imagine it as a sort of post-process focus peaking.
11
votes
6answers
1k views

Is post processing always necessary for best results?

While using my old Point and Shoot camera I used to think about post-processing photos in Photoshop like something unnatural, fake, and deceptive. But after buying DSLR I have not only to think about ...
16
votes
6answers
21k views

Where can I get free RAW files online for practicing with Lightroom?

I've downloaded Adobe Lightroom in order to learn RAW image processing. I want to practise on some photos that covers basic subjects (Histograms, HDR etc). Is there a good, free source of RAW images ...
12
votes
10answers
25k views

Cheap/free tool to view/convert Canon CR2 RAW format photo files on Windows?

Recently, my family had some professional photos taken while vacationing at a resort. The photos were given to us on CD in both .CR2 and .jpg formats. While we can view the JPEG-format versions of ...
14
votes
5answers
5k views

Nikon RAW image processing in non-Nikon software

I love Adobe Lightroom, the workflow, the interface, the whole package. However, as a Nikon owner never did I manage to get the colors to look as good as after processing with Capture NX. No doubt ...
6
votes
2answers
3k views

What workflow should I use for processing RAW photos in Lightroom?

I started shooting in RAW, and I use Adobe Lightroom. What workflow would you recommend to use for the processing? I will really appreciate a detailed description of the steps (or a link to one). ...
19
votes
5answers
5k views

How can I tell exactly what changed between two images?

For example, for a recent conversation about JPEG compression I wanted to compare pixel for pixel what changed between two JPEGs (one with compression level 100, and one with compression level 95). ...
12
votes
3answers
634 views

How would I go about using my SLR to measure the 'greenness' of a photo?

Background My digital pictures can be read into a computer program like Matlab or R as a m x n x 3 matrix where m x n is the number of pixels observed by each of the three (red, green, and blue) ...
9
votes
3answers
425 views

Is the image processor relevant in a camera when shooting RAW?

When cameras come out the company often states that the image processor is upgraded. Does such an upgrade matter when one only shoots in RAW? When shooting RAW the image is taken directly from the ...
6
votes
3answers
7k views

How to analyze images with Fast Fourier Transform method?

I am learning about analyzing images with the method of FFT(Fast Fourier Transform). The image I am analyzing is attached below: And the result of the FFT analysis of this picture is presented ...
6
votes
4answers
2k views

Should I save an image as png, jpeg or bmp?

If I edit an image file using some application like Gimp, Photoshop or MSPaint, while saving I will be asked to select the required file-format. There are different formats available, the common ones ...
3
votes
3answers
894 views

Why do I have to convert RAW files to JPEG to open them? [duplicate]

Possible Duplicate: How do I get started with RAW photography? I am a new to RAW shooting and recently bought a Nikon DSLR. I find that only the software which came with the camera can open ...
3
votes
1answer
415 views

What algorithms or example tools are there for denoising of images in Raw format?

I am trying to perform some post-processing of Camera Raw images captrued using my Canon EOS 450-D. I am using PS CS5 and GIMP particulary to remove noise which is present in images. My questions is: ...
9
votes
3answers
1k views

What is a quick way to restore old black and white and sepia photographs?

I have a bunch of old black and white and sepia photographs from my grandparents' album that I scanned and would like to restore. The photographs are generally in good condition. there are some ...
1
vote
1answer
131 views

How can I change the pixel data in a DNG while keeping all the metadata?

I am looking for some free tools that will let me easily process the pixel data in a RAW file (DNG or NEF) while keeping the metadata untouched. Are there any such tools? Use case: I am ...