The Stereoscopic Analyzer (STAN) combines realtime image analysis with visualization tools to assist cameramen and post-production staff in shooting correct stereo content.

Shooting and processing high-quality 3D content is a huge challenge for production teams. A wide range of parameters like color matching, stereo geometry and the orientation of the two cameras may vary from scene to scene depending on content, near and far objects, the convergence plane and the depth of focus.

Developed by the Fraunhofer Heinrich Herz Institute, the Stereoscopic Analyzer Assistance System for Perfect 3D Stereo STAN supports camera operators and stereographers in computing stereo parameters and camera settings critical for stereo quality. STAN ensures that the parameters are fed directly to both cameras so that incorrect setting can be identified and adjusted either manually or automatically if the set-up is a motorized stereo rig.

STAN captures and analyses stereo images in real-time. Metadata can be generated and saved for a streamlined post production process. Corresponding feature points in the scene are matched automatically to determine the given disparity range, and to compute stereo calibration data. Using actuators, the stereo baseline and other mechanical parameters of the stereo rig can be adjusted automatically so that the specified disparity range is not exceeded. Residual distortions in color and stereo geometry can be corrected using real-time color matching.
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STAN uses a touch screen and viewing tools like crop/opacity overlay, side-by-side, checkerboard or anaglyphic stereo to analyze the stereo quality while tools like RGB parade, signal waveforms or color histograms assist in color control. Pixelby-Pixel disparity maps are used to visualize the depth structure of the scene. Basic stereo parameters like convergence planes can be adjusted manually and the results watched simultaneously. Related shift-cropscale processing is done on-the-fly.

STAN was developed by the Fraunhofer Heinrich Hertz Institute, Berlin in association with KUK Film Produktion, Munich as part of the German interdisciplinary project PRIME funded by the Federal Ministry of Economics and Technology (BMWi).

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