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Questions tagged [photography]

Photography is the art, science, and practice of creating durable images by recording light or other electromagnetic radiation, either chemically by means of a light-sensitive material such as photographic film, or electronically by means of an image sensor.

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How to get the EXIF data from a file using C#

I would like to write a small program in C# which goes through my jpeg photos and, for example, sorts them into dated folders (using MY dating conventions, dammit...). Does anyone know a relatively easy way to get at the EXIF data such as Date And…
Joel in Gö
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What is "antibanding" in photographing?

What is "antibanding" in photography? I read this term in Android documentation for the android.hardware.Camera.Parameters.setAntibanding() method.
Chris.Zou
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Is it possible to detect blur, exposure, orientation of an image programmatically?

I need to sort a huge number of photos, and remove the blurry images (due to camera shake), the over/under exposed ones and detect whether the image was shot in the landscape or portrait orientation. Can these things be done on an image using an…
rup
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Python program Airnef stuck while downloading images

I am using Airnef to download pictures from my Canon DSLR camera through python. I can download one picture without problems so the whole setup seems to work. However, as soon as I want to download another image the software hangs. The code to me…
Besi
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Adjust White balance

I'm looking at some image processing algorithms for white balance manipulations. Seems like a previous Stackoverflow question answers the question of automatic white balance algorithms rather well. However I'm wondering how to convert from one…
trican
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Better .NET SDK support - Canon or Nikon?

Need to do a remote image capture from a "prosumer" camera into a C#/.NET app (for capturing pics at a higher resolution and more control than a webcam). Any advantage for Canon vs. Nikon remote capture SDK's? Is one better supported than another?…
Brandon
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How to convert between lux and exposure value?

How to convert from an exposure value to lux? Thanks! i.e. what's the formula behind this chart?
ohho
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Determine transformation matrix

As a followup to my previous question about determining camera parameters I have formulated a new problem. I have two pictures of the same rectangle: The first is an image without any transformations and shows the rectangle as it is. The second…
dwergkees
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How to know or calculate depth of field of a photo from EXIF tags?

I want to know the depth of field of a photo, preferably in cm or m. I know that we can know the camera setting by reading the EXIF tags, but is there a tag directly telling us the depth of field? Or how can we calculate it from some EXIF…
Andy Li
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How to read Lightroom keywords from image file using PHP?

I have a photo community (www.jungledragon.com) that allows users to upload photos. My platform is PHP/CodeIgniter. As part of the upload process I'm already reading EXIF info using PHP's exif_read_data function, which works fine. I read camera…
Fer
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Lens correction projection

What is the simplest way to un-warp a photo made using fisheye or wide-angle lens? I'm looking a pixel projection formula that has few parameters. Camera and lens parameters will not be known, so user has to change the parameters visually. Thanks
LicenseQ
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Algorithm for measuring the Euclidean distance between pixels in an image

I have a number of images where I know the focal length, pixel count, dimensions and position (from GPS). They are all in a high oblique manner, taken on the ground with commercially available cameras. alt text…
Mark Iliffe
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How can I check out the picture quality in program using c#?

I want to check out whether the photograph is suitable for print or not using my application.How can I do that?I don't know much about photo quality?Is the resolution of every photograph is same or not?
Dinu
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Android Eclipse How can i save rendered GLsurfaceView as *.png image

hi i'm making a photograph effect app. So,i loaded bitmap from camera(i saved orginal image and then loaded) to glsurfaceview and applied some effects but i couldn't find a way of saving changed image as image file *.png or *.jpg. i looked almost…
Doga Oz
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Light measuring in android

I’m trying to get a uniformed value that indicates a light level from the Android back (main) camera. I’m using several Android devices and the object captured is absolutely static (same object in the same light condition, in the same angle and the…
Ofer Orgal
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