Questions tagged [image-processing]

programs that manipulate, enhance, or convert images

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3 views

Best way to estimate periodicity of motion in an image?

I have a video clip in which a surface undulates with a steady period - I need to be able to use image processing to count the frequency and do it repeatably in an automated fashion when other clips ...
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1answer
37 views

trace PNG with outlines to SVG

I have a PNG file that contains some B/W lines, e.g., I would now like to trace those lines to get an SVG file. When using Inkscape to trace, it'll always return the lines as 2D plastic objects: I ...
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Node library to check the the user uploaded file is an actual safe image

I would like to verify that the image a user has uploaded is an actual displayable image without any crazy scripts, not just some random file or a corrupted image. How can I do this? I've looked at ...
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Sorting images (so they are viewable in windows' file explorer) by content similarity

I've been able to find a lot of similar questions, most on photos stackexchange, but I couldn't find any satisfactory answers. What I AM looking for: Sort/Rename images based on the similarity of the ...
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22 views

Good thumbnails index generator with file names?

Given a folder full of pictures, what would be a good program to generate a thumbnail index file for them? Basically I want to generate a single picture containing thumbnails of everything inside the ...
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Auto fill gaps in lines in an image

In the image below, I want a gratis Windows app to close off the gaps - in red (or anything except black). Should become something like although my lines are not perfect :-) Also, it is somewhat ...
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Is there a way to apply shaders to camera on system level?

I just came across this fancy CRT shader which can be used with a camera input and I was wondering, is there a way to use such effects so that any app using camera will instead see the processed image?...
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Looking for a library to detect text areas in an image (not OCR!)

My client has an issue with screenshots which are included in their handbooks. For legal reasons, they want to blur out text areas in the images. The screenshots are of a machine operator interface. ...
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Image tracking without AR/ 3d in JavaScript

We have a big mural on a big wall. It is requested that when viewing this mural on your handheld device, like a smartphone's camera, image overlays should be placed at specific positions within that ...
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Image background remover API

Can anybody recommend a good, reasonable priced (preferably free) image back ground remover API? Can either work with Node JS or .NET. I've looked at a number of them EG. removal.ai, but they all seem ...
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Is there a photogrammetry software suite capable of applying the same operation on a different set of 2D images?

Is there a photogrammetry software suite capable of applying the same operation on a different set of 2D images? Let me clarify it with an example. There are a lot of photogrammetry applications which ...
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Is there a modern OOP image processing lib for PHP?

The original question is 10 years old, but your answer may have changed: We're evaluating if we have to re-invent the wheel because of the lack of good libraries or we simply can't find one. We have ...
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1answer
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Scanner app like tool in macOS

There are many scanner apps for smartphones like Microsoft Lens, Scanner Pro, Adobe Scan, etc. They usually apply some filters to make documents clean and some rotate/straighten tools to fix skewness. ...
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Have an CT image at the input and while the algorithm is running, should be performed segmentation. Which algorithms for this task?

I started working on computed tomography image segmentation. Do I need to encode the image? Is there an algorithm or library that will do it for me?
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Intel Realsense-Compatible 3D Model/Stitcher

I have an Intel RealSense SR300. I'm running Windows 10 (preferred), and Ubuntu. My situation is: It's been sitting in a box unopened for years, I just busted it out because I need to build a 3D model ...
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Python libraries for automating camera capture commands

Purpose: I'm being tasked with writing some Python scripts capable of recognizing & capturing receipts from a printer, loading them to an external server which will in turn feed them through Azure ...
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Live adjust exposure - shadow/highlight

I have a surveillance camera pointed at the front door from inside my house. Due to lighting differences only either insides or outside are ever appropriately lit. Is there a software that selectively ...
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45 views

Tool to automatically fill defined polygons on an image

I would like to ask if there is an automatic graphic tool to fill polygons on an image? My problem concerns in particular that each polygon of one type should have the same color. I would like to ...
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1answer
24 views

Reproducing photos with vector-based geometric primitives (ellipses, bezier curves)

Anyone knows a free software or a filter/plugin/extension for image processing software that works like primitive.lol does?. It turns pictures into a stack of ellipses, rectangles,triangles (= a Cargo ...
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realtime Blur, Zoom, Pan with images on Android

I am trying to find a class or library to do realtime Blur, Zoom, Pan with images on Android. I looked at the EffectFactory class but it's not covering these things
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1answer
30 views

Can I easily extract handwriting from a recipe card to an image?

My mom wants to save/digitize a lot of our grandma's old recipes, but she also wants to preserve the original handwriting (not just convert to text). I can find a lot of suggestions for software that ...
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39 views

Paint.net Alternative for macOS

When I used windows, I used paint.net and loved it. I used it all the time. I switched to a Mac and was disappointed when I found out there is no paint.net for Mac. Has anyone found any good ...
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25 views

OCR software/application that transforms hand-written code to digitally-written code

What I am looking for is a software/application that takes a source code written by hand on a piece of paper and converts it to digital code in a clean, tidy, and orderly fashion. I do not want just ...
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Combine multiple screenshots into one

I'd like to take lots of overlaping screenshots to capture parts of a "top-view" ancient game, and to assemble them into one big image, revealing the map during my progress. Which software ...
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Looking for easy to use free image data annotation tool online

I am looking for an easy to use free image data annotation tool online for computer vision-related task (deep learning). Any kind of suggestion would be really great. Background: I will use at most ...
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14 views

Creating collages with smooth transition between images

I have created collages with Microsoft Autocollage before and I like the style of it. It's not like other collages where we can still identify single images by their border. Instead, the images blend ...
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TinyPNG but on Windows to process lots of pictures

I'm working building a site to sell shoes, and I have at least 34K pictures in one of my HDD I want to upload these pictures to the shopping site, but they need to be compressed first (lossy ...
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Software for editing JPEG files directly? [i.e. block manipulation]

In the case where a JPEG file must be edited, but without leaving the file "apparently" edited (i.e. leaving all metadata, spec-/format-ambiguities, DCT tables, etc., byte-identical to the ...
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1answer
18 views

Software for AI generated pictures

Where can I get Android software that generates AI pictures that can be used as profile pictures in antonymous accounts? I've heard this is possible, but I'm not sure where I can get such an app.
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Use a low res image to find the high res version?

I have a low resolution image. I know that I have a higher resolution version somewhere on a backup drive. Is there any software that can use the low res image to find the high res version? Ideally, ...
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1answer
50 views

Mac-compatible software to automatically rotate, de-skew, and crop images

I'm looking for a simple and free application which can automatically scan a document (in the form of a JPG or PNG), change the perspective to remove skew, and then crop it. It would be nice if the ...
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1answer
31 views

Position of points where color changes in image transect

Let's imagine I have an image of a simple object with 2 or 3 (or more) different areas of different color. Now imagine I "draw" a line (transect) or use a tool producing a "virtual"...
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22 views

Is there a software that stitch 4 images together to form 1 big image?

Suppose I have a phone with bad camera, I want a good quality image. I take a photo at each corner of a document. So I will have 4 photos. I want to concatenate these photos together to get one big ...
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7 views

Program to convert bar-graph visual data to numerical data

Does a program exist to convert already-made bar graphs (in an image file format) to numerical values, where each numerical value corresponds to the height of each bar?
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29 views

Fast Static Site Generator for sites with lots of large images

I wrote a photography website using GatsbyJS, gatsby-transformer-sharp, the Directus CMS, and gatsby-source-directus7. It was super easy in development and created a blazing fast static website. The ...
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1answer
23 views

Mobile app to measure rooms and generate floor plans

Is there a mobile application than can measure a room and generate a floor plan? I'm imaging a workflow like taking a series of photographs, and have the app do clever image processing to determine ...
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14 views

What Python library / API would you recommend for basic on-screen image and text processing?

I am building an application that interacts with my business's websites, as well as will hopefully manage some of the internal emailing as well. The emailing part is the tricky one; for the rest, I ...
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GIMP plugin for rectifying scanned documents on Linux

I use (Devuan) GNU/Linux. I often scan official documents I receive, and want to store them. But the process of scanning (and sometime the original printing) distort the image relative to the original....
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Image viewer that randomly displays images from sub-folders using tag filters

I have a parent folder named "Pictures" containing tens of thousands of pictures that are organized in sub-folders that are named by date such as "2020-04-07". Some of these pictures have been taken ...
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18 views

Stitch together images that com from same source file

Here's my situation: I have grabbed some PNG images from a website that allows browsing a newspaper article at various zoom levels. I imagine that each page has its own full-resolution image file on ...
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1answer
106 views

API to identify people from photos

I am looking for an API that can help me identify a person from a photo and then compare if it's the same or different person in any other photo. It's kind of like how Google Photos or Facebook ...
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22 views

Photo-splitting software

I have many photo scans which consist of multiple images scanned on a single sheet alike this one Is there any tool which allows splitting them into separate files in an automatic way without quality-...
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15 views

Convert diagrams to graph data

There are some publicly available PDFs and image files of diagrams showing UK rail track layout (basically flow charts), which I want to parse to something more computer-friendly (a database perhaps, ...
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2answers
47 views

increasing the resolution of a pdf image

I have a pdf with an image in it, that pdf was given to me by a coworker and they asked me if I could extract that image, because we need it for a project and we can't find the freelancer that created ...
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1answer
19 views

3d Modelling: Creating driver license theory book images

I'd like to create images suitable for a (European) driver license theory book (see below). My criteria are all "nice to haves", I'd be interested to hear software recommendations that do not meet all ...
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1answer
26 views

Beginner-friendly Rendering of 2D images from 3D models

I have a 3d model with opaque and transparent parts that has a light bulb in it. (A lamp) I would like to be able to see what shadows are cast onto the planes below and above it(floor and ceiling) AND ...
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24 views

Image Deduplication

I'm looking for a program that will help me remove duplicate imagess from a bunch of folders. Preferably free. It has to be able to do: Similarity matching (e.g. find images that look alike) Tell me ...
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2answers
34 views

Generate image preview of 3d mesh using command line

Is there any tool to generate image previews of a 3d model? Currently using OBJ format. The goal is to do a bulk generation to quickly detect which are the characteristics of each OBJ. So far I've ...
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1answer
42 views

Clean up greyscale images

I scanned a few comics, and have images like this I would like to have the background white ... in fact, I would like to have the white transparent, but that's just "nice to have", not "must have". ...
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Generate depth map from one/two images?

I want to generate a depth map from one image, as Google's AI. Or this super unpractical blog program does from at least two. I know that exist some algorithms that do this from multiple images, but ...

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