img blind watermark by frontend

dct2 for 2d signal

Node.js implementation of the Discrete Cosine Transform (version 2 for now).

dct and idct algorithm implement with typescript

FFT for ndarrays

Complete collection of code files (*.java/js/py/cpp/etc.) published on Project Nayuki website.

GLSL setup for a Fast Fourier Transform of two complex matrices

使用盲水印保护创作者的知识产权using invisible watermark to protect creator's intellectual property

文本盲水印：把信息隐匿到文本中，put invisible blind watermark into a text.

Blind&Invisible Watermark ，图片盲水印，提取水印无须原图！

The code for the post "The Two-Dimensional Fourier Transform and Digital Watermarking"

C Implementation of 1D and 2D Wavelet Transforms (DWT,SWT and MODWT) along with 1D Wavelet packet Transform and 1D Continuous Wavelet Transform.

Invisible Hyperlinks in Physical Photographs

Improved the original repo, 'Invisible Hyperlinks in Physical Photographs', embedded with longer string than the original

A simple library to compute Singular Value Decomposition as explained in "Singular Value Decomposition and Least Squares Solutions. By G.H. Golub et al."

A series of webgl experiments to explore fourier transform calculation complexity.

👑 Functional WebGL