This plugin offers a rails engine for the bitcrowd sir trevor fork. With Image Upload and lots of other customizations to sir trevor.

Gem to assist with the display of imgix images

Native image processing in Ruby without deps.

Jekyll plugin to automatically generate photo gallery (album) from image folder.

HTML Helpers for Rails. Enhances support for HTML forms, images and layouts.

An image +meta extraction tool

Generate sprites from images at runtime, to cache and speed up subsequent requests

Create collage images from Flickr.

The VWS API client was created to allow developers programmatically interact with Vuforia’s cloud recognition system. Use the VWS API client to upload image targets into the Vuforia system, add application metadata, and monitor the status of databases and targets.

Inspects flickr http/dom, and allows downloading of images and full sets

Uses Exiv2 and ffprobe to find creation dates for media types it finds.

Create collage from 10 top-rated Flickr images

A tool to create PDF from raster image.

Fetchs Flickr images using a list of search keywords as arguments.

Requires imagemagick, gifsicle extractFrames and commandLoop from my github which is currently private. That might change soon.

Segments and quantifies beads in microscopy images

This gem attempts to discern whether an image contains any faces. Depends on OpenCV.

Render AlchemyCMS images directly from cloudinary.

Convert Frame Buffer to Image

Allows you to understand for a given image what is going on there.