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Questions tagged [image-manipulation]

Image manipulation is the term used to describe various operations applied to images such as resizing, removing noise, or alteration of colour depth.

Image manipulation is the term used to describe various operations applied to images such as resizing, removing noise, alteration of colour depth. These operations are usually performed to improve the quality of the image (such as the removal of noise) or to alter it so that the image file is better suited to its intended usage(such as resizing to meet display constraints on a mobile device).

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This value is apparently giving me a zero?

The assignment asks for : "Rename the setLuminance method as blend and have it take two pictures as parameters: the foreground and the background. Sequence through the pixels of the foreground and background simultaneously (assume they are exactly…
alnmod
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Create JPG File that changes with time

I would like to generate a .JPG file that changes image based on the time of day. I know I could do this with PHP to swap out an image, but I would prefer to have it built into the image file. For instance, even if someone saved the image, it would…
user3647894
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How to access images manipulations from Amazon s3 in iphone app

I am currently using Amazon S3 server, in that i am able to upload images from iPhone. Is there a possibility to manipulate (cropping, transformations, effects, face detection) the images that i get from amazon server.
Vijay
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Java outputting an image to grayscale and sepia

I am trying to read an image and output it as new grayscale and sepia version. I have figured out most of it, but the conversion only works for some images. For others, it just leads to an error message: Exception in thread "main"…
user3331241
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PHP Codeigniter - image manipulation - using GD2

I'm using the standard Codeigniter image manipulation library to resize images, i setted up to use GD2 library in params. But the images are very low quality once resized mantaining ratio of the image, i tryed setting up quality = 100 but they still…
itsme
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Creating a bitmap file line by line

Is it possible to write a bitmap in C# line by line? I am worried that using the Bitmap.Save() function will require too much memory when dealing with LARGE files.. To clarify, I want to do this: Open the file and write the bitmap header (if…
krebstar
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Image position and clipping

Does anybody know how to place an image in the webpage, but both position and clipping (maybe also resizing) are interactively done by user? I need it for my registration page, I've done some clipping and resizing from css and javascript, and it's…
Dhiasa Janwar
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Thumbnails and photo size over Windows Mobile

Considering the different sizes of the screen on Windows Mobile devices, which should be the ideal size of a photo that I'm going to show on my WinForm application? And what about thumbnail? Is there any kind of algorithm to make thumbnail of the…
VansFannel
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Generating "unregular" borders with Imagemagick

We have the customer requirement that a standard image will receive unregular border and background. Is it possible to generate this in some way using Imagemagick or some other tool? An example:
user2665694
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discord.js putting an image on another image

I've been trying to make a command that when you send an image or a url of an image it puts that image on another image that I already have in the code and I keep getting errors every time I try changing it to either imageTemp (which is the image…
cupded
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Which would you prefer for a function's input? Flex's DisplayObject or Flex's BitmapData?

I am in this situation where I need to select a Flex type (image placeholder/image type/image container) for passing parameters in/out of different functions in an image editor. And, those different functions are either another…
Gary Tsui
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How can I draw an offset to a contour or shape in a raster image?

How can I programmatically dilate the contour of a given shape? Currently, I'm able to find and draw the contour of a shape using python+openCV, but I want to draw an offset to the contour of the shape in a raster image (like in the image below). By…
lorelayb
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How do I retrieve the Alpha Channel from an image in PHP?

How do I retrieve the Alpha Channel from an image using PHP?
user799173
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iOS: Cropping image in wrong position and size

I'm trying to allow the user to mark an area with her hand and then the image will be cropped to that particular area. The problem is that i've got everything wrong with the cropping sizing, positioning and scaling. I'm definitely missing something…
Yosi199
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How to do Free hand Image Cropping in C# window application?

How to do Free hand Image Cropping in C# window application??
shirish
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