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PSI-14-1:2016 - JTIAP V2

Format: PDF (761 pages)

Language: EN
Publication date: 01. 11. 2016


Projectgroup: JT

JT Industrial Application Package
from 1 € 109.00 Incl. 19.00% VAT


The JT format is an industry focused, high-performance, lightweight, flexible file format for capturing and repurposing 3D product definition data that enables collaboration, validation and visualization throughout the extended enterprise.

The JT format is both robust, and streamable, and contains compression for compact and efficient representation. The format was designed to be easily integrated into enterprise translation solutions, producing a single set of 3D digital assets that support a full range of downstream processes from lightweight web-based viewing to full product digital mockups.

Some of the highlights of the JT format include:

  • built-in support for assemblies, sub-assemblies and part constructs;
  • a flexible partitioning scheme, supporting single or multiple files;
  • b-rep solid shape representations;
  • product manufacturing information in support of paperless manufacturing initiatives;
  • precise and imprecise wireframe shape representations;
  • discrete purpose-built levels of detail;
  • triangle sets, polygon sets, point sets, line sets and implicit primitive sets (such as cylinder, cone and sphere);
  • a full array of visual attributes such as for materials, textures, lights;
  • hierarchical bounding box and bounding spheres;
  • data compression that allows producers of JT files to fine tune the trade-off between compression ratio and fidelity of the data.
  • Beyond the data contents description of the JT format, the overall physical structure/organization of the format is also designed to support operations such as:

  • offline optimizations of the data contents, i.e. file granularity and flexibility optimized to meet the needs of enterprise data translation solutions;
  • asynchronous streaming of content, i.e. viewing optimizations such as view frustum and occlusion culling and fixed-framerate display modes;
  • layers, and layer filters.
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