JAVA视频转ascii字符串_ASCII Art一个能够将图像或视频转为ASCII字符的C/C++库

ASCII Art

Real-Time ASCII Art Rendering Library - Live demo: https://art.pixlab.io

ASCII Art is a single file C/C++ library that let you transform an input image or video frame into printable ASCII characters at real-time using a single decision tree. Real-time performance is achieved by using pixel intensity comparison inside internal nodes of the tree.

For a general overview on how the algorithm works, check the bottom of the demo page.

ASCII art is a related (and older) graphic design technique for producing images from printable characters. This implementation is based on the paper:

N. Markus, M. Fratarcangeli, I. S. Pandzic and J. Ahlberg, "Fast Rendering of Image Mosaics and ASCII Art", Computer Graphics Forum, 2015, http://dx.doi.org/10.1111/cgf.12597

Getting started

Embedding the library in your application is straightforward. All you have to do is drop the ascii_art.c and its header file in your source tree plus the hex model that can be downloaded here and perform the following API calls successively:

Call AsciiArtInit first to initialize the ascii_render structure defined in the ascii_art.h header file.

Prepare the image to be processed by converting it to the grayscale colorspace. You can rely on some external library like OpenCV cvtColor or the built-in AsciiArtLoadImage interface.

Allocate a buffer big enough to hold the entire ASCII text output. The amount of bytes needed is returned via the AsciiArtTextBufSize interface. This step is optional if you do not want a text output but instead a binary ASCII glyphs image.

Finally, transform the input image into ASCII glyphs/text via AsciiArtRender.

Below is a simple C program that demonstrates a typical usage of the ASCII Art C/C++ interfaces.

#include "ascii_art.h"

ascii_render sRender; /* Stack allocated */

/* Initialize the render structure */

AsciiArtInit(&sRender);

/* Load an image from disk */

int width, height;

unsigned char *zBlob = AsciiArtLoadImage(argv[1],&width,&height);

if( zBlob == 0 ){

puts("Cannot load image");

return;

}

/* Allocate a buffer big enough to hold the entire text output */

size_t nBytes = AsciiArtTextBufSize(&sRender, width, height);

unsigned char *zText = malloc(nBytes);

/* Finally, process */

AsciiArtRender(&sRender, zBlob, &width, &height, zText,1);

/* zBlob[] hold the binary ASCII glyphs now */

/* Output the result */

fwrite(zText, sizeof(char), nBytes, stdout);

/* Release memory */

free(zText);

free(zBlob);

Resources

The C/C++ API reference (Only three interfaces are exported plus another optional), the hex model are all available on the official PixLab page at: https://pixlab.io/art

Please report any issue or feature request here on Github.