JCLArriaga5 / color-edge-det-qft

Edge detection in color images using sobel filtering and Fourier transform for Quaternions.

Edge detection in color (RGB) images

Edge detection in color (RGB) images using sobel filtering and Fourier transform for Quaternions.

Sobel horizontal and vertical

Correlate sobel horizontal and vertical

References

• [1] Beijing Chen, Gouenou Coatrieux, Gang Chen, Xingming Sun, Jean Louis Coatrieux, Huazhong Shu, Full 4-D quaternion discrete Fourier transform based watermarking for color images, Digital Signal Processing, Volume 28, 2014, Pages 106-119, ISSN 1051-2004, https://doi.org/10.1016/j.dsp.2014.02.010.
• [2] Bahri, Mawardi & Ashino, R. & Vaillancourt, R.. (2013). Convolution and correlation based on discrete quaternion Fourier transform. Information (Japan). 16. 7837-7848.