1.1 KiB
1.1 KiB
TerminalImageViewer
Small Java program to display images in a (modern) terminal using RGB ANSI codes and unicode block graphic characters; a C++ port is available at https://github.com/stefanhaustein/tiv
Algorithm (for each 4x8 pixel cell mapped to a unicode block graphics character):
- Find the color channel (R, G or B) that has the biggest range of values for the current cell
- Split this range in the middle
- Average the colors above and below and create a corresponding bitmap for the cell
- Compare the bitmap to the assumed bitmaps for various unicode block graphics characters
Usage
javac TerminalImageViewer.java
java TerminalImageViewer [-w <width-in-characters>] <image-filename-or-url>
Common problems
- If you see strange horizontal lines, the characters don't fully fill the character cell. Remove additional line spacing in your terminal app
- Wrong colors? Try -256 to use a 256 color palette instead of 24 bit colors or -grayscale for grayscale.
Examples
If multiple images match the filename spec, thumbnails are shown.
