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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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What extra information is stored in a photograph taken by a digital camera?

When I take pictures with my camera the file sizes seem exceedingly large. In this example the original is 5186kb. I wrote a java program to just read the image and then write it again, removing any information except the pixel values. The first…
ZGorlock
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Storing pictures on site or externally?

Hello guys I'm thinking of making a photography website just for storing high quality pictures. I know that in order to make it faster and not lose quality I can compress the pictures. Since I'm using React I know its not an advantage due to the…
Jackie Codes
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Python program airnef not working on Canon 3000D

Sadly Canon doesn't provide the EOS Utility for the Canon 3000D camera for wireless real time image transfer to computer. I'm currently attempting to use the airnef software by testcams.com, its a open source python based application. It hasn't been…
Jon
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Long exposure camera - Software method

What is the most efficient method to achieve long exposure time? Basically, API of Android camera2 allow to manual change exposure time, ISO and other camera parameters, but limited by device limit. Eg. Huawei P20 Lite has 1s limit, but, built-in…
Robert Radziszewski
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FOV of One Plus 6T?

I was wondering what the Field of View is for the rear Camera is for the One Plus 6T. The information I've been able to gather so far but I'm not sure if the information is 100% right. 4.25mm focal length (25mm equivalent) fixed lens to 35/50mm in…
Keith347
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Generating a 3D raster scan over the surface (shell) of non-rectangular shapes

So I have a hobby project of strapping a USB microscope onto a 3D printer to take pictures of an object at different X, Y, and Z locations, which are then stitched into a full image. I started with the code from this stack to generate a 2D…
Bowtie
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Why there are white stripes inside a PDF image when i'm open the PDF with gimp or document viewer?

Why there are white stripes inside a PDF image when i'm open the PDF with GIMP or Document Viewer? It doesn't happen when I open with Acrobat Reader, Chrome Viewer or Photoshop. note: When exporting with GIMP (e.g. from PDF to JPEG), the white…
guy
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Nikon D3400 black line in pictures

I got an used nikon d3400, I took some pictures but the all have a black line at the bottom (covers about 20% of the image). How could this be fix?
DannyC
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Remove Background From RAW Images Using ImageMagick

I have two pictures -- for simplicity, let's say one contains a pot plant in a garden (let's call it potplant.nef), and the second contains the same scene, but minus the pot plant (i.e. just the background - let's call it garden.nef). I want to…
Blender Fox
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Get real RAW values from pixels using OpenCV or any other software

In my understanding of spec sheets from digital cameras, each output color pixel is made out 4 real pixels on the CCD. However, when reading from a camera, for example using OpenCV, one can get as much as NxMx3 pixels. The two green pixels get…
Aquiles Carattino
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What is the color threshold value for the white color?

My question is about color tracking... What is the color threshold value for white in python ? I need to track the white color alone in a group of pictures. So I need to separate the white color. In order to do so I need to know the threshold value…
Saravana Bhavan
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Correcting the whole viewing sphere of fisheye image

I was wondering are there methods for correcting the whole viewing sphere of a raw fisheye image? If I understood correctly. The common strategy for removing barrel distortion from fisheye images is first to crop the spherical fisheye image to the…
R1pe
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Convert object length from pixels to cm without knowing the calibration factor

In a digital image, size (or distance) is measured in pixels. Is there any method to find the actual size of an object in an image without knowing the calibration factor?
ali samah
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Building a photography portfolio site in Silverlight - your input wanted!

I'm a .NET newbie and I want to learn more about programming a Silverlight webapp. In my spare time Photography is a big passion of mine, so I thought why not try to build myself a portfolio website in Silverlight as a nice project to focus on and…
TedOnTheNet
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how to save photos and videos with CameraKit

I'm making a camera app using Flurgle Camerakit, I have a camerapreview and all, I can call the cameraalistener, but what do I do after that? the manual says to include the following in my onclick for the shutter button…
Mayank Thakur
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