François Chaplais

François Chaplais is a faculty member at Mines ParisTech, affiliated with the Centre Automatique et Systèmes (CAS), also known as the Control and Systems Department. He is actively involved in research and teaching, with a focus on wavelets, optimal control, and their applications in aerospace, building thermal systems, and hybrid vehicles. He teaches the course Introduction to Signal Processing at the Master's level.

His research interests include:

• Wavelets and multiresolution analysis
• Optimal control and time scales
• Signal processing and filter banks
• z-transform and convolution operators
• Nonlinear approximation in 1D and 2D signals
• Applications in energy and aerospace systems

Chaplais has developed extensive educational materials, most notably an online Wavelet Matlab Tutorial, which elaborates on concepts from Stéphane Mallat's seminal book. This tutorial covers signal structures, LTI filters, z-transform, convolution, subsampling, and 2D wavelet applications in image processing such as grayscale and color approximation. He also provides downloadable MATLAB software for wavelet and signal processing applications.

His industrial collaborations include work with IFPEN (Institut Français du Pétrole Énergies Nouvelles), indicating applied research in energy systems and control. Although no recent publications or articles are listed in the provided text, his sustained academic output in tutorials and software suggests continued scholarly engagement.

There is no mention of formal scientific awards or student advisement in the available information. He maintains an active institutional email and homepage, suggesting ongoing academic affiliation.

He leads or contributes to software development efforts, particularly in wavelet-based MATLAB tools, and has contributed to numerical implementations of wavelet transforms, perfect reconstruction filter banks, and edge detection algorithms. His work bridges theoretical signal processing with practical engineering applications.