How to Hide a Watermark in an Image

Explains how to add a hidden watermark to an image. Shows examples using a two-dimensional Fourier transform. This is a version of steganography. * If you would like to support me to make these videos, you can join the Channel Membership, by hitting the "Join" button below the video, and making a contribution to support the cost of a coffee a month. It would be very much appreciated. Or by clicking here: https://www.youtube.com/channel/UCrltzuSvRbL3rpsvLDnFkuQ/join Check out my 'search for signals in everyday life', by following my social media feeds: Facebook: https://www.facebook.com/profile.php?id=100091651540952 Instagram: https://www.instagram.com/iainexplains/ Website: http://www.iaincollings.com Related videos: (see: http://iaincollings.com) • Introduction to Image Processing with 2D Fourier Transform https://youtu.be/tlwIWjeuu8U • 2D Fourier Transform Explained with Examples https://youtu.be/3gAZ0U66AEA • 2D Image Downsampling and Upsampling Explained with Examples https://youtu.be/L2soA3GdPXU • How does the Discrete Fourier Transform DFT relate to Real Frequencies? https://youtu.be/pIFz84oj9cA • Fourier Transform Equation Explained https://youtu.be/8V6Hi-kP9EE • Discrete / Fast Fourier Transform DFT / FFT of a Sinusoid Signal https://youtu.be/lwQTNcWtN7w • Fourier Transform of cos with phase shift https://youtu.be/97eKhJwf9Mk • How do the Frequency, Sample Rate and Duration affect the DFT of a Sinusoid? https://youtu.be/5diC6XLLVoA • What is negative frequency? https://youtu.be/gz6AKW-R69s For a full list of Videos and Summary Sheets, goto: http://www.iaincollings.com