This application accepts drag and dropped images (.bmp files only for now), then processes the images to find vertical columns of text.

It provides a simple interface to load images, apply the processing effects, visualize the results, and automatically save XML files.

It can also serve as a Win32 API example program, using only the built-in Windows APIs -- as well as a basic example for manipulating bitmap data using pure C++98 code.

• Thumbnail Rendering: Displays original and processed thumbnails side-by-side.
• Image Smearing: Applies a vertical smear effect to the images.
• Column Detection: Detects significant vertical columns in images and overlays these detections on the thumbnails.
• Dynamic Layout: Thumbnails wrap to the next line if there is insufficient space horizontally.
• Filename Display: Displays the filename below each original thumbnail.
• Scrollable Interface: If thumbnails exceed the visible area, vertical scrolling is supported.
• Drag-and-Drop Support: You can drag image files into the window to process and display them.

1. Loading Images: Images are loaded via a file open dialog or drag-and-drop.
2. Processing:
   • The image undergoes vertical smearing where each pixel is replaced by the pixel above it.
   • Vertical columns in the image are detected using edge detection, and their positions are saved.
3. Rendering:
   • Both the original and processed images are rendered as thumbnails.
   • Detected columns are drawn as vertical green lines over the original thumbnails.
   • Filenames of the images are displayed below the original thumbnails.

• Mouse Wheel Support: Use the mouse wheel to zoom in or out of the thumbnails.
• Thumbnails: Thumbnails are automatically resized and repositioned based on the window size and user interactions.

Prerequisites:

• OpenWatcom 2.0
• Windows (any version supported by OpenWatcom 2.0 should work)

To compile and run this program:

1. Clone the repository:

   git clone [email protected]:mindfulvector/colfind.git
   

2. Open colfind.wpj using OpenWatcom 2.0
3. Press F4 or select Targets > Make from the menu bar
4. To run, press Ctrl+R or select Targets > Run from the menu bar

This code is licensed under the BSD 3-clause license, according to the LICENSE file.