Intern, Hybrid Implicit Neural Representation Compression

Location: Rennes, France

About InterDigital

InterDigital is a global research and development company focused primarily on wireless, video, artificial intelligence (“AI”), and related technologies. We design and develop foundational technologies that enable connected, immersive experiences in a broad range of communications and entertainment products and services. We license our innovations worldwide to companies providing such products and services, including makers of wireless communications devices, consumer electronics, IoT devices, cars and other motor vehicles, and providers of cloud-based services such as video streaming. As a leader in wireless technology, our engineers have designed and developed a wide range of innovations that are used in wireless products and networks, from the earliest digital cellular systems to 5G and today’s most advanced Wi-Fi technologies. We are also a leader in video processing and video encoding/decoding technology, with a significant AI research effort that intersects with both wireless and video technologies.

Founded in 1972, InterDigital is listed on Nasdaq.

InterDigital is a registered trademark of InterDigital, Inc.

For more information, visit: www.interdigital.com.

Summary

Hybrid implicit neural representations (INR) compress images by combining learnable feature grids with lightweight neural networks. The grids capture spatial information at multiple resolutions, while a compact network transforms these features into pixel values. Both components are jointly optimized for each image to balance bitrate and reconstruction quality. The resulting latent features and network parameters are quantized and encoded into a compressed bitstream. During decoding, the features are recovered and processed by the network to reconstruct the image. This approach enables efficient image reconstruction with low decoding complexity, at the cost of more computationally intensive encoding.

The objective of this internship is to investigate underlying architectures used by hybrid INR. Starting from an existing framework, the intern will explore how to adapt and tailor entropy, up sampler and synthesis networks to the specific image to encode. The proposed methods will be evaluated in terms of rate-distortion performance, rendering quality, retraining complexity, and encoding time.

You will be working in the SympAI team, in the New Media Codecs Group of the Video Lab.

Responsibilities

In collaboration with the InterDigital research team, the candidate will be expected to:

Analyze existing technologies and identify core challenges related to Hybrid INR compression.

Contribute to the design and development of software solutions addressing these challenges

Perform rigorous testing and validation, including simulation-based evaluations, to ensure functional correctness and performance in line with established protocols.

Implement, test, and validate the proposed components and algorithms.

Communicate technical outcomes effectively, contributing to documentation, internal reports, and potentially to publications or intellectual property filings.

Qualifications

Master’s student in Computer Engineering, Computer Science, Software Engineering, or a closely related discipline.

Strong proficiency in C/C++ and Python is required. Familiarity with one or more of the following areas is a plus: 3D geometry, compression, computer vision, or computer graphics.

Fluent in English, with excellent written and verbal communication skills. Demonstrates strong collaboration abilities and a team-oriented mindset.

Keywords

Hybrid INR, image compression, model fine-tuning, rate-distortion optimization, neural rendering, quality enhancement.

Expected Outcomes

Software modules: C++ functions, python scripts

Standardization contributions

Patents

Location

Rennes, France

InterDigital is an equal employment opportunity employer. InterDigital will not engage in or tolerate unlawful discrimination with regard to any employment decision, policy or practice based on a person’s sex, gender, pregnancy (including childbirth, breastfeeding and related medical conditions), age, race, color, religion, creed, national origin, ancestry, citizenship, military status, veteran status, mental or physical disability, medical condition, genetic information, sexual orientation, gender identity or expression, or any other factor protected by applicable federal, state or local  law. This policy applies to all terms and conditions of employment, including, but not limited to, recruiting, hiring, compensation, benefits, training, assignments, evaluations, coaching, promotion, discipline, discharge and layoff.

À propos d'InterDigital

InterDigital est une société internationale de recherche et développement spécialisée principalement dans les technologies sans fil, la vidéo, l'intelligence artificielle (« IA ») et les technologies associées. Nous concevons et développons des technologies fondamentales qui rendent possibles des expériences connectées et immersives dans un large éventail de produits et services de communication et de divertissement. Nous concédons des licences sur nos innovations dans le monde entier à des entreprises qui proposent ces produits et services, notamment des fabricants d'appareils de communication sans fil, d'électronique grand public, d'objets connectés (IoT), d'automobiles et d'autres véhicules à moteur, ainsi qu'à des fournisseurs de services cloud tels que la diffusion vidéo en streaming. Leader des technologies sans fil, InterDigital a vu ses ingénieurs concevoir et développer un large éventail d'innovations utilisées dans les produits et réseaux sans fil, des premiers systèmes cellulaires numériques jusqu'à la 5G et aux technologies Wi-Fi les plus avancées d'aujourd'hui. Nous sommes également un leader du traitement vidéo et des technologies de codage et de décodage vidéo, avec un important effort de recherche en IA à la croisée des technologies sans fil et v