On March 27 and 28 at CALM (Campus la Borie, Limoges) the “Cordées de la Recherche” (Research climbing rope) workshops will take place. The opportunity for our M1 students to present their scientific work in poster form.

The two days will be punctuated by conferences.

For this 2025 edition, discover each week the portraits of the speakers who will be present.

The portrait of the week is Pr. Chaker Larabi :

Abstract: 

Quality versus utility assessment in the era of artificial intelligence

With the rapid growth of artificial intelligence (AI) in image processing and analysis, traditional methods of assessing image quality are being challenged by the need for task-specific utility evaluation. This talk explores the evolving relationship between image quality and utility in the AI era, addressing key questions: Does higher image quality always translate to better performance? How do AI-driven tasks redefine what constitutes a “good” image? We examine conventional image quality metrics, their limitations, and the emerging shift towards utility-based assessments that prioritize performance in downstream AI applications. Case studies from surveillance systems will illustrate how AI models can extract meaningful insights from seemingly low-quality images.

Biography:

Chaker Larabi is a Full Professor at Université de Poitiers, specializing in image processing and computer vision, including perception, quality assessment, compression, and enhancement. He is head of the ASALI research axis of the XLIM institute and deputy scientific director of GdR-IASIS. He obtained his PhD in 2002 and HDR in 2021. Chaker Larabi supervised 20+ PhDs and published over 250 papers. He has played key roles in JPEG, MPEG, and AOM standardization efforts. He is a Senior Associate Editor for IEEE Trans. on Image Processing, associate editor of other prestigious journals and has been an Area Chair, reviewer, and organizer for major IEEE and EURASIP conferences.