Aix-en-Provence – Entremont

Identifiant de l'opération archéologique : 8281 Date de l'opération : 2007 (PC) Inventeur(s) : Arcelin Patrice (CNRS) Après le bilan du rapport triennal achevé fin 2006 (BSR PACA, 2006 : 107-108), le PCR de publication vient d’amorcer en 2007 une nouvelle programmation triennale (coordination Patrice Arcelin et Gaëtan Congès). Les travaux de l’année écoulée ont débouché sur un rapport intermédiaire qui rend compte de l’avancement des recherches sur trois aspects du site, ceux de sa structurat..

Audio2Rig: Artist-oriented deep learning tool for facial animation

Creating realistic or stylized facial and lip sync animation is a tedious task. It requires lot of time and skills to sync the lips with audio and convey the right emotion to the character's face. To allow animators to spend more time on the artistic and creative part of the animation, we present Audio2Rig: a new deep learning based tool leveraging previously animated sequences of a show, to generate facial and lip sync rig animation from an audio file. Based in Maya, it learns from any production rig without any adjustment and generates high quality and stylized animations which mimic the style of the show. Audio2Rig fits in the animator workflow: since it generates keys on the rig controllers, the animation can be easily retaken. The method is based on 3 neural network modules which can learn an arbitrary number of controllers. Hence, different configurations can be created for specific parts of the face (such as the tongue, lips or eyes). With Audio2Rig, animators can also pick different emotions and adjust their intensities to experiment or customize the output, and have high level controls on the keyframes setting. Our method shows excellent results, generating fine animation details while respecting the show style. Finally, as the training relies on the studio data and is done internally, it ensures data privacy and prevents from copyright infringement.Comment: Video examples and description: https://www.youtube.com/watch?v=e0xtntdpcmg&ab_channel=Golae

Implementing a Machine Learning Deformer for CG Crowds: Our Journey

CG crowds have become increasingly popular this last decade in the VFX and animation industry: formerly reserved to only a few high end studios and blockbusters, they are now widely used in TV shows or commercials. Yet, there is still one major limitation: in order to be ingested properly in crowd software, studio rigs have to comply with specific prerequisites, especially in terms of deformations. Usually only skinning, blend shapes and geometry caches are supported preventing close-up shots with facial performances on crowd characters. We envisioned two approaches to tackle this: either reverse engineer the hundreds of deformer nodes available in the major DCCs/plugins and incorporate them in our crowd package, or surf the machine learning wave to compress the deformations of a rig using a neural network architecture. Considering we could not commit 5+ man/years of development into this problem, and that we were excited to dip our toes in the machine learning pool, we went for the latter. From our first tests to a minimum viable product, we went through hopes and disappointments: we hit multiple pitfalls, took false shortcuts and dead ends before reaching our destination. With this paper, we hope to provide a valuable feedback by sharing the lessons we learnt from this experience.Comment: DIGIPRO 202

Entremont et la sculpture du second âge du Fer en Provence

Entremont and later Iron Age sculpture in Provenc

Une journée de rencontre à Velaux sur…

Lors d’une journée d’études à Velaux, en octobre 2001, des protohistoriens méridionaux, d’autres régions de France et aussi de l’étranger ont envisagé la sculpture protohistorique de la Gaule du sud sous l’angle des critères de sa datation et sous celui des sources d’influence : monde méditerranéen d’un côté, monde celtique continental de l’autre. Ce texte constitue un résumé commenté des propositions et interrogations qui découlent de la relecture de l’iconographie sculptée et de la stylisti..

Le Rhône à Arles : données archéologiques et sédimentologiques

International audienceThe topographical situation of Arles on a small rocky hill between the plain of Beaucaire and the Rhône delta of Camargue shows outstanding evidence of the hydrologic variations of the river during Protohistory and Antiquity. An approach of the topographical, archaeological and sedimentologic facts now available, leads us to suppose the existence of periods of sudden rises of the river with occasional floods and which overall make a permanent occupation unfavourable in the lower lands (from the 5th century BC to the early 1st century AD and then from the 4th to the 6th century AD). The intensity of the overflowing reduces during the 2nd and 3rd centuries, the right moment for craft and trade expansion, particularly on the western bank, much exposed owing to its low altimetry.La position topographique d'Arles, sur une petite éminence rocheuse entre la plaine de Beaucaire et le delta camarguais du Rhône, en fait un témoin privilégié des fluctuations hydriques et hydrologiques du fleuve durant la Protohistoire et l'Antiquité. L'approche des données topographiques, archéologiques et sédimentologiques disponibles suggère l'existence de périodes de fortes activités du fleuve, avec occasionnellement d'importantes crues, le tout peu favorable à l'occupation permanente des terres basses (du Ve s. avant J.-C. au début de notre ère, puis à nouveau du IVe au VIe s. après J.-C.). C'est aux IIe et IIIe s. que l'intensité des débords s'amenuise, moment propice à une extension péri-urbaine des implantations artisanales et commerciales, particulièrement sur la rive droite très exposée du fait de sa faible altimétrie

Estudo de características de crescimento e de carcaça medidas por ultra-sonografia em novilhas de dois grupos genéticos

The aim of this work was to study the effect of genetic group on body weight (BW), hip height (HH), chest girth (CG), longissimus muscle area (LMA), backfat thickness (BF), rump fat thickness (RF), and muscle index (MI=100×LMA/BW), and the relationship between them by using correlation and regression analyses. The records were obtained on 120 heifers at 14 months of age, from two genetic groups: 60 animals Braunvieh × (Santa Gertrudes × Nelore) and 60 animals Santa Gertrudes × Nelore. The genetic group significantly affected BW, CG and LMA. The estimates of phenotypic correlation between BW and HH, and between BW and CG were 0.49 and 0.79, respectively. The correlation between carcass traits and BW, CG and HH were of moderate to low magnitude, and between LMA and subcutaneous fat deposition were close to zero. All correlation estimates between MI and the others traits were negative and close to zero, except the correlation between MI and LMA, which was positive and high, as expected. Thus, the results of this study indicate that the genetic group with the greatest proportion of a continental breed genes showed higher LMA, BW and CG than the genetic group containing only genes of British and Zebu breeds. Furthermore, the growth traits are not good quantitative indicators of LMA and/or subcutaneous fat thickness, at least in phenotypic terms.KEY WORDS: Body measurements, crossbreed, longissimus muscle area, morphologic traits, subcutaneous fat thickness.O objetivo desse trabalho foi estudar o efeito de grupo genético sobre as características peso (PS), altura do posterior (ALT), perímetro torácico (PT), área de olho de lombo (AOL), espessura de gordura subcutânea na costela (EG), espessura de gordura subcutânea na garupa (EGP8) e índice de musculosidade (IM=100×AOL/PS), além da relação entre essas características por meio de análises de correlação e regressão. Obtiveram-se as medidas em 120 novilhas com quatorze meses de idade e provenientes de dois grupos genéticos: sessenta animais Braunvieh × (Santa Gertrudes × Nelore) e sessenta animais Santa Gertrudes × Nelore. O efeito de grupo genético afetou significativamente as características PS, PT e AOL. As estimativas de correlação fenotípica entre PS e ALT e entre PS e PT foram de 0,49 e 0,79, respectivamente. As correlações entre as características de carcaça medidas por ultra-som e PS, PT e ALT apresentaram magnitudes de moderadas a baixas, e aquelas entre a AOL e as medidas de gordura ficaram próximas de zero. Todas as correlações envolvendo o IM apresentaram-se negativas e próximas de zero, com exceção da correlação entre IM e AOL, que foi, como esperado, positiva e alta. Dessa forma, os resultados do presente trabalho indicam que o grupo genético com maior proporção de genes de uma raça continental apresentou maior AOL, PS e PT do que o grupo genético contendo apenas genes de raças britânicas e zebuínas, sendo que as características de crescimento não são bons indicadores quantitativos da AOL e/ou da espessura de gordura subcutânea na carcaça, pelo menos em termos fenotípicos.PALAVRAS-CHAVES: Área de olho de lombo, características morfológicas, cruzamentos, espessura de gordura, medidas corporais

Salles hypostyles, portiques et espaces cultuels d'Entremont et de Saint-Blaise (B.-du-Rh.)

Arcelin Patrice. Salles hypostyles, portiques et espaces cultuels d'Entremont et de Saint-Blaise (B.-du-Rh.). In: Documents d'Archéologie Méridionale, vol. 15, 1992. Espaces et monuments publics protohistoriques de Gaule méridionale. pp. 13-27