Facet Orientation

Facet_orientation

Authors: Bob Dougherty and Gary Chinga

Installation: Download Facet_orientation.classs or Facet_orientation.java and place it in the Plugins folder. Requires ImageJ version 1.28.

Description: ImageJ plugin to derive surface orientation and statistics from a topographical image acquired with a profilometer. The input is a 32 bit image or stack in which the pixel values represent distance, z, to a surface. The user also needs to provide the transverse spacing between the pixels, expressed in the same units as the range data.

New in Verison 1:
Angles are given in degrees

Segmentation of angles with a certain orientation by applying a threshold value.

After thresholding the "flat areas" are represented by white pixels
Measurement of number of flat areas (pixels) and flat area fraction,

Mean facet orientation and statistical details

Pseudocolors

Progress-bar

Segmentation of the images is useful for measuring the number of areas and fraction that are under a certain angle and can be used to verify the angles that e.g. contribute most to light scattering. The "flat areas" (white) may correspond to areas reflecting light on a surface.
The black and white areas (fraction) are given according to the defined threshold value. The other results are independent of the threshold.

Image outputs:
Polar angle, q, between the surface normal vector and the z-axis, degrees

Azimuthal angle of the surface normal vector, degrees

Thresholded image

Tabular outputs:
Highest Angle

Lowest Angle

Number of white areas

White %

Black%

Versions: 0: 4/10/2002
1: 7/26/2002 (Gary Chinga) Many new analytical and presentation options.
2: 7/29/2002 (Gary Chinga) Changed the tabular outputs.
(see also Gary's SurfCharJ)

License:
Copyright (c) 2002, 2005, OptiNav, Inc.
All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.

Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

Neither the name of OptiNav, Inc. nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

ImageJ: ImageJ can be freely downloaded from the ImageJ web site.

Authors:	Bob Dougherty and Gary Chinga
Installation:	Download Facet_orientation.classs or Facet_orientation.java and place it in the Plugins folder. Requires ImageJ version 1.28.
Description:	ImageJ plugin to derive surface orientation and statistics from a topographical image acquired with a profilometer. The input is a 32 bit image or stack in which the pixel values represent distance, z, to a surface. The user also needs to provide the transverse spacing between the pixels, expressed in the same units as the range data.
New in Verison 1:	Angles are given in degrees Segmentation of angles with a certain orientation by applying a threshold value. After thresholding the "flat areas" are represented by white pixels Measurement of number of flat areas (pixels) and flat area fraction, Mean facet orientation and statistical details Pseudocolors Progress-bar Segmentation of the images is useful for measuring the number of areas and fraction that are under a certain angle and can be used to verify the angles that e.g. contribute most to light scattering. The "flat areas" (white) may correspond to areas reflecting light on a surface. The black and white areas (fraction) are given according to the defined threshold value. The other results are independent of the threshold.
Image outputs:	Polar angle, q, between the surface normal vector and the z-axis, degrees Azimuthal angle of the surface normal vector, degrees Thresholded image
Tabular outputs:	Highest Angle Lowest Angle Number of white areas White % Black%
Versions:	0: 4/10/2002 1: 7/26/2002 (Gary Chinga) Many new analytical and presentation options. 2: 7/29/2002 (Gary Chinga) Changed the tabular outputs. (see also Gary's SurfCharJ)
License:	Copyright (c) 2002, 2005, OptiNav, Inc. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. Neither the name of OptiNav, Inc. nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
ImageJ:	ImageJ can be freely downloaded from the ImageJ web site.