VTrace is a 2D image measurement program developed by VayTek. It creates regions of interest and outputs statistics based on those regions of interest. The statistics include ROI statistics and pixel statistics. ROI statistics are area, perimeter, length, major/minor axes, xy position, centroid and histogram. Pixel statistics include mean, standard deviation, maximum, minimum, running sum, etc. VTrace has a palette editor and allows for spatial and intensity calibration of the 2D image. It also allows the user to crop and cut to the ROI, then save the cropped images. This lets the user fill an ROI, and save a series of cropped or filled ROIs to create subvolumes. It also has a tracing editor and allows for autotracing of the images. VTrace reads and writes 8 bit or 16 bit raw images. It also reads and writes the TIFF image format, and the SGI image library format.

computes 2D statistics on regions of interest and pixels
palette editor
sophisticated tracing editor
creates subvolumes

Applications

2D and 3D microscopy
volumetric editing
MR and CT scans
densitometry
X-ray analysis
general purpose 2D region analysis program

Technical Specifications

written in X11 and Motif
supports 8 bit pseudocolor and 24 bit visuals
8 bit or 16 bit images, raw or TIFF format

Requirements

most UNIX platforms
X11 server
24 bit (recommended) or 8 bit color monitor
64 Mb RAM (larger data sets may require additional RAM)

Slice Align - Software to Align and Register a Stack of 2D Images

The Slice Align package, developed by VayTek, consists of two programs: the first program lets a user align a stack of 2D images so they can be used in 3D reconstruction or deconvolution. The user identifies fiduciary points on two consecutive images, then aligns the two images to those selected points. After all the images are aligned, the second program loads all the images into memory and computes the final adjustments automatically using a least squares approach. These programs currently run on SGI and IBM computers. Contact VayTek for details.

Slice Align is often used with Surfer described below.

Surfer - 3D Surface Extraction for 3D Rendering

This program, developed by VayTek, is most often used in combination with the Slice Align programs outlined above. Re-registered images sometimes do not render well due to the odd alignments of the boundaries on re-registered images. Surfer lets the user outline (by tracing) the areas of interest in each 2D image. After all the areas have been traced, Surfer extracts a surface based on the multiple 2D traces. The extracted surface can be rendered in VoxBlast. Surfer is currently available on SGI machines. Contact VayTek for details.

VayTek Inc., 505 North Third Street, Tetra II Bldg, Suite 200, Fairfield, IA 52556
Tel 641-472-2227 Fax 641-472-8131 Email vaytek@vaytek.com

© 2000 VayTek Inc. Information may be reproduced only with permission from VayTek Inc.