Questions tagged [image-processing]

programs that manipulate, enhance, or convert images

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19
votes
5answers
1k views

Windows free program for batch watermarking files

I'm publishing albums of photos on my blog and Facebook and I'd like to add watermarks to them. I've found tutorials for programs such as Gimp, but they require long manually applying procedure for ...
18
votes
5answers
1k views

Software to batch crop pictures

I converted about 200 pictures from RAW format and after converting I realized that the pictures had a pink line going down the entire right side of the picture (example). Even though its small, it ...
15
votes
3answers
195 views

Easy-to-use cross-platform photograph retouching tool?

I am trying to find a good cross-platform photograph retouching tool that's not as powerful, expensive and complicated as Photoshop. It doesn't have to be free, but over 100€ starts to hurt too much. ...
13
votes
6answers
11k views

App to quickly generate correctly resized iOS app icons

In iOS development, there are quite a few different sizes of icons needed to make your app look the best throughout the system. Here's what the average list of icon files looks like in an iOS project: ...
13
votes
4answers
5k views

Program to auto crop images into headshots

I currently have to take an image provided to me and crop it down to be considered a headshot. The problem is that this could be a few hundred photos a week. Does anyone know how to do this ...
12
votes
6answers
290 views

What program offers automated image resizing?

I have a blog. Before I upload images from my computer (these images are really big), I want to resize them (make them smaller) and save them in a different folder. After that, I can upload them. ...
12
votes
4answers
2k views

App to remove duplicate frames in an animated gif?

I've been looking at various gif optimizers and converters and I couldn't find one that would work good for me. The function in the app I'm looking for is comparing frames of an animated gifs, ...
11
votes
1answer
153 views

“Hacker” utility: space-efficient embedding a file into JPEG file container

With the advent of social media platforms and pervasive free image hosting (for example, Amazon's recent "unlimited photo storage" for Prime members), I would like to take advantage of this to (...
10
votes
3answers
173 views

A program that diffs 2 images

I'm looking for a program that does a "diff" between two JPG images. Requirements: The diff algorithm used by the app is known. Ideally, it should be verifiable via code inspection, but that's a ...
9
votes
3answers
12k views

Program to generate a CSV file from an image containing a table

I'm looking for a program that can generate a CSV file from a scanned image or PDF containing a table E.g. if the input is the ouput would be the corresponding CSV file: AIDS Behav, 9712133, ...
9
votes
1answer
622 views

An open source alternative to Wolfram Alpha

I want an open source alternative to Wolfram Alpha that is like a QA system that: can take in natural language and process it have image processing functions has scientific functionality and ...
8
votes
2answers
2k views

Generate static picture gallery website with image captions from EXIF tags

I am looking for a (command line) tool (preferably in Python) which generates a static picture gallery website from a folder of images. The generated webpage should show along the photo the caption ...
8
votes
1answer
149 views

Lossless Screenshot Resizer - automatically detect “empty” regions

I asked a similar question on Programming Puzzles & Code Golf, but I'd require a version with a bit usability. Here's what the software shall do: get screenshots from clipboard open screenshots ...
7
votes
2answers
3k views

Measure ink coverage in a PDF file

Is there a tool (free software, on linux) that allows me to calculate the amount of black in a PDF file? E.g. measured in mm², or some other suitable unit?
7
votes
3answers
2k views

PC program to take photos of documents, correct perspective, rotate and crop them automatically

I know of several mobile apps designed to tidy up photos of documents, snapped directly from a phone camera, but I'd like a PC program to do the same thing. I already have a bunch of photos of ...
7
votes
1answer
265 views

How to find a TIF image with a specific color depth (8 Bit) inside a directory with 10k images?

I want to find a TIF image inside a directory with a specific color depth (8 Bit) with 10'000 images. It does not need a GUI, a basic log file would be sufficient. It should run on Windows and ...
7
votes
3answers
130 views

Program to cut&save rectangles out of a scanned document

I often use my scanner to scan multiple small receipts. I can fit 10 small receipts on a page. I'd like to save these receipts, each to a separate file. I can do this easily with copy and paste, but ...
7
votes
2answers
97 views

Remove passers-by from picture, by taking the same picture several times

I want to take a picture of a building, but there are always a few people walking in front of it. While I wait for a person to exit the frame, another person comes in from the other side. So, I ...
7
votes
1answer
77 views

OCR of vehicle registrations from blurred video footage

I have a large volume of video from cameras set up to record vehicles registrations. Unfortunately it was necessary to carry out much of the observation during hours of darkness and a large proportion ...
6
votes
2answers
2k views

WebP library for Java?

Is there a library in java for producing/consuming image files in the WebP format? The libraries I found online are either libwebp written in C, or its JNI bindings in Java. Is there anything in pure ...
6
votes
1answer
67 views

Fixing corrupted jpgs that still looks ok visually

So like many people lots of my jpg photos had not been properly backed up with parity bits and all my backup copies had become corrupted due to "silent data corruption". I scanned my drive using the ...
6
votes
1answer
4k views

Super-Resolution software [closed]

Superresolution (SR) is a class of techniques that enhance the resolution of an imaging system. Is there any implementation of these algorithms available? I've tried, and found the following all ...
6
votes
1answer
144 views

Library to overlay text on top of data URI images

In HTML, I can use a data URI to display image to avoid requiring an HTTP request to fetch image resources. This can be useful for displaying icons. For example: <img width="128" height="128" ...
5
votes
3answers
3k views

SVG to PNG batch conversion

Is there any software that would help me convert a large amount of small SVG files to PNG? It would be great if it would let me specify the color to use for any solid paths in the SVG files.
5
votes
1answer
97 views

Is there an OS X app for reducing an image to a specific file size

I'm currently dealing with a few applications that impose a 2mb limit on import file/image size. Currently, the only way I have found to deal with this is to manually find all images that are above ...
5
votes
2answers
2k views

Alternative image/film scanner software with support for Canon CanoScan 9000F

The vendor-supplied driver and management software (MP Navigator EX) for my CanoScan 9000F are, to be kind, barely adequate. The UI is clumsy, non-intuitive, and provides poor workflow management. ...
5
votes
3answers
599 views

Using image processing to infer if a seat is occupied

I'm looking into different attendance taking options for a particularly large seminar class (600ish students) and I was thinking — what if a picture was taken of the seats, maybe with a visual cue on ...
5
votes
2answers
103 views

Movement detection in and out of a perimeter from a live video feed

I have a school project and I need to do perimeter control in an open area. So I have a drone up in the air to provide live video feed into my computer but I have no idea how to detect when ...
5
votes
1answer
327 views

Motion correction (image stabilization) softwares/libraries

I have fluorescence recording from population of neurons sample video on youtube. The problem is that camera had vibrations making each frame shifts a little in x-y direction. Additionally recording ...
5
votes
0answers
80 views

Software for matching rectangular images in other images or PDFs

I'm looking for software that searches through multiple images or a PDF for an smaller image that I give it. The best example I can give is with this page from a stamp catalogue: I would give the ...
5
votes
0answers
122 views

Software that provides easy FFT, DCT and or DWT to watermark images

Is there a software package online that provides easy FFT, DCT, and/or DWT to watermark images? Even more specifically, JPG images. It should feature either batch file processing capabilities, or a ...
5
votes
1answer
83 views

Compressing many similar large images?

I'm dealing with a large archive of satellite images of the Earth, each one taken 15 minutes apart over the same area, therefore they are quite similar to each other. Two contiguous ones look like ...
4
votes
1answer
36 views

program to automatically add file metadata graphically into image

I have a series of digital photos and I want to have them professionally printed to put them up for sale. I want to test aspects of the quality of printing, so for each image, I want to have certain ...
4
votes
2answers
3k views

Java Open Source Imaging Library as a substitute to the JAI

I am currently looking for an open source alternative to the Java Advanced Imaging API. I need a plugin for the javax.imageio package, and I need the functionalities that would other be in the JAI. At ...
4
votes
1answer
461 views

Image manipulation library that can do reverse 3D projection

I'd like to find a library which can do simple but true 3D reverse projection. Given an image of a flat surface viewed from an arbitrary viewpoint in space, return a flat 2D image with perspective ...
4
votes
1answer
156 views

Free app to generate random picture collages

I am looking for an app to create a pictures collage. It should be generated automatically with settings like final image size distance between pictures number of pictures directory to take the ...
4
votes
1answer
77 views

Windows application to emboss date on photos

Looking for Windows application that will quickly and easily emboss a date onto JPG images (photographs), preferably obtained from the EXIF data. Being able to perform the function on a group (batch) ...
4
votes
1answer
877 views

Convert 2d image(s) to 3d model

I want to convert images / movies of real objects and scenes into virtual 3d objects. Any free or demo-able end user apps exist? Linux or Windows. As input, it should take multiple images. Videos ...
4
votes
1answer
182 views

Library to compare images

I'm looking for a .NET library (that can be accessed from C# code) that can compare 2 images and tell how similar they are. I'm trying to find a way to compare a scanned copy of a document with the ...
4
votes
1answer
55 views

Motion detection in a large number of photos from a webcam

I have a webcam taking a photo every minute. Most of the time, there is nothing happening, so I end up with thousands of thousands of near identical photos. How can I find the photos where something ...
4
votes
1answer
85 views

Android picture privacy filter (via Share intents)

Let's say I see a rare rhinoceros and take a smartphone picture to send it to Wikipedia via the Android Wikicommons app (which is accessible via "Share" on any picture). If I do this directly, the ...
4
votes
1answer
217 views

Solutions for object recognition on mobile devices

I am going to write a mobile application that recognizes images within a closed target group. I guess the group contains 20 to 50 comic-like images like this. The application reacts if any of those ...
4
votes
1answer
291 views

Brightness histogram of a video

I want an histogram of the brightness of a video. I define brightness of an image as the sum of RGB values of all its pixels, divided by 3, divided by the number of pixels. The program would ...
4
votes
1answer
43 views

Software to easily create Wikivoyage banners

Wikivoyage volunteers need to create banners to place at the top of each article. Thousands of banners like this one: Here is the process for each locality in the world: Example of locality: New ...
4
votes
0answers
26 views

Assess a picture's quality (size, contrast, sharpness)

I have millions of pictures of things (buildings, animals, people, etc). Some of the pictures are of bad quality, so they need to be shot again. How to measure the "quality" of each picture? I define ...
4
votes
0answers
50 views

Better picture->ASCII art converter, that takes character shapes into account

Typical picture to AA converter just treats all output characters as pixels, considering only it's overall boldness. I want Image -> Ascii Art converter that uses OCR technologies and choses ...
4
votes
0answers
73 views

PDF document signing

I am working on a project where the user will input data (like name, address and such) in a HTML form. With the help of PHP, and other tools, I'll use that data to populate a PDF form and database (...
4
votes
0answers
2k views

Java Codec API to convert JPEG frames/images to MPEG video

I need your help & wisdom for selecting a Java Media Codec Library. Requirements: Codec most be 100% Java implementation (No native dependencies) Codec most be able to convert JPEG images to all ...
4
votes
0answers
38 views

Data flow image processing software like simulink

Is there any data flow image processing software like Simulink? I want a software like Simulink in which we can simply drag and drop tools without any coding. when you want to do a sequence of tasks ...
4
votes
0answers
116 views

Game development content pipeline/toolchain?

I'm a software developer at a gaming company, and we're currently undertaking efforts to improve our asset creation and management toolchain. Our initial idea was to code our own solution from scratch ...

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