Фотограмметрический комплекс для трехмерной реконструкции лица человека

С.Ю. Желтов, Ю.В. Визильтер,
В.А. Князь* (ФГУП ГосНИИАС)

Report: "Photogrammetric system for fast 3D face model acquisition"
S.Yu.Zheltov, Yu.V.Vizilter, V.A.Knyaz (GosNIIAS)
State Research Institute of Aviation Systems, Moscow, Russia
7, Victorenko str., Moscow, Russia, 125319;

Abstract
Digital processing of a person face image for biometric tasks created a good background for progress in person identification, access control and document control. Nevertheless considerable variability of face image due to differences in image acquisition conditions create significant problems for reliable person identification based on a face image.

The promising way to improve the quality of solving biometric tasks is to use textured face 3D model which has some irrefutable advantages in comparison with an image. These advantages are

• accuracy of a model, which allows to perform necessary biometric measurements using the 3D model;
• a possibility of accurate texture mapping providing photorealistic visualization;
• a possibility for changing of model observation conditions and therefore a possibility for image generation with given characteristics such as camera parameters, point of view, illumination etc.
• a potential for an expression and an exterior view of a person face variation.

The proposed technique for fast and imperceptible for a person face 3D model generation is based on photogrammetric means for 3D model reconstruction. The technique uses three monochrome images of a person head for face 3D reconstruction and one color image for 3D model texturing. The main requirements for developed system was high speed of 3D model generation for the most informative part of the face, insensibility and high degree of automation, possibility of work in normal illumination condition, color texturing, low cost.

To satisfy these requirements monochrome image acquisition for 3D reconstruction is performed in infrared structured lighting by three infrared-sensitive cameras. The cameras are synchronized to get simultaneous images of a face. Preliminary joint calibration of four cameras provides high accuracy of 3D reconstruction and texturing. The developed system was successfully applied for various biometric applications. One of the special application is complete solution for a person frontal photograph generation. Frontal photograph has to satisfy to given condition on head orientation relative to camera and hardly could be provided in common case. The system performs automated frontal photograph generation in short time. Testing of generated frontal images for identification tasks showed that they significantly improve the quality of identification.

Another application of the system was a person identification basing on a set of reference constant face points. It also showed high system qualities for this task solution.

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Сведения об авторах доклада
Князь Владимир Александрович.
ФГУП "ГосНИИ авиационных систем"
125319, Москва, ул. Викторенко, 7
Тел. +7-495-157-3127 Факс. +7-495-157-3100
E-mail: knyaz@gosniias.ru

Князь Владимир Александрович.
Окончил Московский Физико-Технический институт (ФТИ). В настоящее время является начальником лаборатории
короткобазисной фотограмметрии и бесконтактных измерений ФГУП ГосНИИ Авиационных систем (ГосНИИАС).

Mikhail V. Ososkov
Graduated from Moscow Physical-Technical Institute (MFTI). Now he is a Chief of laboratory for Close-Range
Photogrammetry and Non-contact Measurements in the State Research Institute of Aviation Systems (GosNIIAS).