Next meetup scheduled: Convolution-friendly Image Compression in FHE
on April 25th, 4pm CEST (Paris, FR)
Greetings cryptographers!
🗓️ The next FHE.org meetup is scheduled for Thursday, April 25th at 4pm CEST (Paris, FR).
The meetup features Sergi Rovira, a PhD candidate in cryptography at Universitat Pompeu Fabra (UPF), and Axel Mertens, a PhD student in cryptography at COSIC, KU Leuven, presenting Convolution-friendly Image Compression in FHE.
For more information, resources, and the link to RSVP, visit:
https://fhe.org/meetups/049-Convolution-friendly_Image_Compression_in_FHE
Abstract
In this talk, we will detail a practical FHE-friendly image compression and processing pipeline where an image can be compressed and encrypted on the client-side, sent to a server which decompresses it homomorphically and then performs image processing in the encrypted domain before returning the encrypted result to the client.
Inspired by JPEG, our pipeline also relies on discrete cosine transforms and quantization to simplify the representation of an image in the frequency domain, making it possible to effectively use a compression algorithm.
This pipeline is designed to be compatible with existing image-processing techniques in FHE, such as pixel-wise processing and convolutional filters. Using this technique, a high-definition (1024 x 1024) image can be homomorphically decompressed, processed with a convolutional filter and re-compressed in under 24.7s, while using ~8GB memory.
About the speakers
Sergi Rovira is a PhD candidate in cryptography at Universitat Pompeu Fabra (UPF) under the supervision of Vanesa Daza (UPF) and Paz Morillo (UPC). His research is focused on fully homomorphic encryption and lattice based post-quantum cryptography. Previously, he received a MSc in Advanced Mathematics and two BSc degrees, in Computer Science and in Mathematics from Universitat de Barcelona (UB).
Axel Mertens is a PhD student in cryptography at COSIC, KU Leuven, under supervision of Nigel Smart. His areas of study include secure multiparty computation, fully homomorphic encryption and zero-knowledge proofs. Previously, he achieved a master's degree in Electrical engineering at KU Leuven.
Resources from last meetups
You can access all resources of previous meetups on the FHE.org website here.
Resources from this week’s meetup Homomorphic Logic Gates and Integrated Circuits: Designs and Applications with Song Bian are available on the event’s information page.
Click here if you have an idea for something you’d like to present to the FHE.org community!
Looking for conferences resources?
We’ve made all video and poster resources from the conference available at fhe.org/2024/resources. Remember that anyone can add resources to the FHE.org github repository!
If you prefer to just watch the presentations back to back, here is the FHE.org Toronto 2024 Conference playlist on Youtube.
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See you soon!
The FHE.org team