Java Community | Help. Code. Learn.•4mo ago

Any ideas how to render images in console?

Im writing cli application and was kinda inspired of super file It can preview images in fs (example is bellow) So, i decided to implement smth similar Any libs for that?

12 Replies

JavaBot•4mo ago

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Koblížkáč•4mo ago

assuming you will want to use ascii character you could: - load the image into BufferedImage - read all pixels of the raster - display them into console according to their xy coordinates - for changing colors you could use ascii codes

BufferedImage i = ImageIO.read(file);
int[] rgb = i.getRaster().getPixel(x, y, new int[3]);
System.out.print("\033[38;2;" + rgb[0] + ";" + rgb[1] + ";" + rgb[2] + "m" + "█");

BufferedImage i = ImageIO.read(file);
int[] rgb = i.getRaster().getPixel(x, y, new int[3]);
System.out.print("\033[38;2;" + rgb[0] + ";" + rgb[1] + ";" + rgb[2] + "m" + "█");

obviously you are gonna want to loop through all the pixels getWidth, getHeight for that

Tusya <3OP•4mo ago

it will render image as it is, when pixel == char in terminal, so most of the time it wont fit in terminal there should be some resizer or smth

dan1st•4mo ago

there are ways to get the size of the terminal at least on Linux but doing something like this won't work on any system

Tusya <3OP•4mo ago

k, with power of chat gpt i made it work! u mean getting term size?

dan1st•4mo ago

yes, width and height of the terminal At least on Linux, there are commands for that

Tusya <3OP•4mo ago

afak there r platform specific stuff for that

dan1st•4mo ago

yes, exactly but that means even if it works on one device, it may not work on another

Tusya <3OP•4mo ago

default w and h on fallback 🙂

dan1st•4mo ago

and then you have the issue of terminals (especially on Windows) not supporting ANSI

Tusya <3OP•4mo ago

those gonna be unsupporter by app at the first place i guess...

JavaBot•4mo ago

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Any ideas how to render images in console?