Software Engineering Stack Exchange
Software Engineering Stack Exchange

Questions tagged [image-manipulation]

40 questions
21
votes
4 answers

How to know if two images are the same?

I have over 10000 images which about 2000 are duplicates in other formats (as in JPEG, PNG, GIF). Both of these numbers are increasing every day. I need to delete those duplicates and for that I must know how to find them first. My first thought was…
Aistis
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21
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2 answers

What is the current status of software support for JPEG-2000?

The general recommendation to record original scanned images used to be "use TIFF". But programmers need evolution of format for "evolution of software", and I need to evolve my system to change from TIFF to JP2. I have a big image storage…
Peter Krauss
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17
votes
6 answers

Annotate source code with diagrams as comments

I write a lot of (primarily c++ and javascript) code that touches upon computational geometry and graphics and those kinds of topics, so I have found that visual diagrams have been an indispensable part of the process of solving problems. I have…
Steven Lu
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11
votes
4 answers

Best practice- handling images on website

I am porting an old eCommerce site to MVC 3 and would like to take advantage of design improvements. The site currently has product images stored in 3 sizes: thumbnail, medium (for display in a list) and expanded for a zoomed look. Right now we…
Steve
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11
votes
3 answers

Is CSS resizing of images still a bad idea?

It's always been looked at that using width/height attributes on images which aren't what the original image actual is is a bad idea. It could mean pixalated images or download sizes bigger than nessary. But, is this still an issue? I wouldn't…
David
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9
votes
2 answers

How does image editing software change image contrast?

How does Photoshop or other image editing software change an images contrast? What does contrast mean when we process an image pixel by pixel? Or what does image contrast mean at all? Here I created a very basic image to understand image contrast.…
Mohsen
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9
votes
5 answers

What's the best way to learn image processing?

I'm a senior in college that hasn't done much image processing before (except for some basic image compression on smartphones). I'm starting a research project on machine learning next semester that would require some biomedical image processing.…
rdasxy
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8
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3 answers

Which is better : Storing/retrieving images on/from SQL server or in a directory on server

I am working on a project in Asp.net MVC and need to work with images. There is an SQL database with a Product table. Every product in the table will have it's own image. I have two ways to do this : 1) Save the image in a web directory and store…
Pankaj Upadhyay
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7
votes
1 answer

Extracting color profile information from JPEG files

I'm trying to look up info about reading JPEG's color profile info and to my surprise there's very little open specific how-to information on that regard, but rather lots of general explanation on what it is. Does anyone know how to find and read…
Igor K.
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7
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2 answers

Resizing an image with a non-integral conversion factor

I'm resizing an image based on a non-integral conversion factor (a bmp image, in fact). I understand how resizing works, just non with a decimal number. For instance, if the factor were 2, I would simply write the individual pixels twice to the…
Someone
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6
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2 answers

How are dynamic images programmed?

I have two friends that want to create a jewelry store, focused on customized jewels. The core feature is the jewelry designer, based on a jewel model. Here's an example of the sort of thing I am looking to create :…
Fabrício
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6
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2 answers

Image color/grayscale classification

I am trying to classify a set of images into grayscale or color groups. I have been using ImageMagic to do that, comparing the color image to a grayscale version of itself and then using the Peak Error to determine if it is a grayscale image, as…
Sergio R.
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6
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1 answer

What factors should I be looking at to increase performance in image resizing?

I'm setting up a web app in which people will upload images. Once uploaded the images will be watermarked then resized multiple times (Thumbnails, different sizes etc.) and finally uploaded to Amazon S3 for storage. The web app is written in Python…
Blank
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5
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2 answers

Storing images in file system and returning URLs or virtually resizing and returning byte arrays?

I need to create a REST web service to manage user submitted images and displaying them all in a website. There are multiple websites that are going to use this service to manage and display images. The requirements are to have 5 pre-defined image…
ismaelf
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4
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3 answers

How to process large image with a minimum time lag

I am trying to create a web UI for image processing, with some operations similar to what a site like fotor.com offers. However, I have problems to achieve a similar performance. For example, lets say I uploaded an image on fotor.com of around 3+ MB…
BJ Patel
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