KEYWORDS: Cameras, 3D image processing, Visualization, Image processing, 3D modeling, DirectX, Focus stacking software, Photography, Digital imaging, Chemical elements
Advances in stereoscopic display technologies, graphic card devices, and digital imaging algorithms have opened up new possibilities in synthesizing stereoscopic images. The power of today’s DirectX/OpenGL optimized graphics cards together with adapting new and creative imaging tools found in software products such as Adobe Photoshop, provide a powerful environment for converting planar drawings and photographs into stereoscopic images. The basis for such a creative process is the focus of this paper. This article presents a novel technique, which uses advanced imaging features and custom Windows-based software that utilizes the Direct X 9 API to provide the user with an interactive stereo image synthesizer. By creating an accurate and interactive world scene with moveable and flexible depth map altered textured surfaces, perspective stereoscopic cameras with both visible frustums and zero parallax planes, a user can precisely model a virtual three-dimensional representation of a real-world scene. Current versions of Adobe Photoshop provide a creative user with a rich assortment of tools needed to highlight elements of a 2D image, simulate hidden areas, and creatively shape them for a 3D scene representation. The technique described has been implemented as a Photoshop plug-in and thus allows for a seamless transition of these 2D image elements into 3D surfaces, which are subsequently rendered to create stereoscopic views.
The Parallax Player is a software application that is, in essence, a stereoscopic format converter. Various formats may be inputted and outputted. In addition to being able to take any one of a wide variety of different formats and play them back on many different kinds of PCs and display screens. The Parallax Player has built into it the capability to produce ersatz stereo from a planar still or movie image. The player handles two basic forms of digital content - still images, and movies. It is assumed that all data is digital, either created by means of a photographic film process and later digitized, or directly captured or authored in a digital form. In its current implementation, running on a number of Windows Operating Systems, The Parallax Player reads in a broad selection of contemporary file formats.
StereoGraphics Corporation has introduced a new flat-panel autostereoscopic display, the SynthaGram. It produces bright, clear and satisfying three-dimensional images that may be viewed from a substantial angle of view by many observers. A progression of perspective views, like that used by the parallax panoramagram, is created either by computer or photographic means. Each view is sampled at the sub-pixel level and mapped by means of a process called Interzigging. The resultant Interzigged image is a sub-pixel map of spatial information. The map is displayed on a flat panel screen - in the present case a liquid crystal display. A lenticular screen overlays the flat-panel display, but the direction of the lenticule boundaries are angled to the vertical. The technology, we believe, is the basis for electronic autostereoscopic display solutions for many applications.
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