Holographic imaging of lines: a texture based approach

نویسندگان

  • Alf Ritter
  • Oliver Deussen
  • Hubert Wagener
  • Thomas Strothotte
چکیده

Holography is a method for three-dimensional imaging of objects. In this paper we present an approach for the generation of holograms, exploiting standard graphics rendering methods and hardware. We focus on the visualization of objects composed of line segments, which allow for certain simplifications, and thus hologram generation speed-up. Our method is based on the derivation of a holographic geometric equivalent of the object to be imaged. In this equivalent, the object is represented as a set of geometric primitives combined with precomputed textures. The equivalent is built up under prescribed conditions, thus simulating certain wave characteristics. The hologram of the object to be imaged is gained just by rendering its holographic geometric equivalent. Problems of achieving the necessary resolution of the output hologram are addressed.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

New Pseudo-CT Generation Approach from Magnetic Resonance Imaging using a Local Texture Descriptor

Background: One of the challenges of PET/MRI combined systems is to derive an attenuation map to correct the PET image. For that, the pseudo-CT image could be used to correct the attenuation. Until now, most existing scientific researches construct this pseudo-CT image using the registration techniques. However, these techniques suffer from the local minima of the non-rigid deformation energy f...

متن کامل

Synthetic Holograms of Splines

In this paper we present an approach for the holographic imaging of objects composed of splines. It is based on an imaging method for lines and extended to fit the requirements for the visualization of 3D curves. The input object consisting of splines is decomposed into line segments. These segments are subsequently transferred into the holographic equivalent—a set of textured rectangles approp...

متن کامل

Fast Texture-Based Interference for Synthetic Holography

We present a new texture-based method for holographic imaging. The geometric input data is transformed into what we call a holographic equivalent, which consists of texture-mapped rectangles. The textures represent complex-valued wave patterns originating from geometric primitives of the object to be imaged. We show how to exploit OpenGL and graphics hardware in order to simulate interference. ...

متن کامل

تشخیص درب مبتنی بر بینایی ماشین در صحنه‎های بیرونی

Doors are a significant object for the visually impaired and robots to enter and exit buildings. Although the accuracy of door detection is reported high in indoor scenes, it has become a difficult problem in outdoor scenes in computer vision. The reason may lie in the fact that such properties of a simple ordinary door such as handles, corners, and the gap between the door and the ground may n...

متن کامل

Incremental update of computer-generated holograms

Wendy Plesniak MIT Media Laboratory Spatial Imaging Group Cambridge, Massachusetts 02139 Abstract. We describe the incremental computing method for making localized changes to a computer-generated hologram to rapidly modify the 3-D image it reconstructs. The method populates a scene with holographic primitives, tracks scene-based changes, and updates the diffractive contributions of only affect...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 1997