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Related Experiment Video

Updated: Jun 15, 2026

An Operant Intra-/Extra-dimensional Set-shift Task for Mice

An Operant Intra-/Extra-dimensional Set-shift Task for Mice

Published on: January 22, 2016

Constrained and dimensionality-independent path openings.

Cris L Luengo Hendriks¹

¹Centre for Image Analysis, Swedish University of Agricultural Sciences, Uppsala, Sweden. cris@cb.uu.se

IEEE Transactions on Image Processing : a Publication of the IEEE Signal Processing Society

|March 11, 2010

Summary

Path operations in image analysis are enhanced for accurate length measurements. New constraints improve their use in granulometry for analyzing elongated structures directly from gray-value images.

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Area of Science:

Image analysis and computer vision
Morphological image processing
Computational imaging

Background:

Path openings and closings use flexible line segments for morphological operations.
These operations adapt to image structures, detecting non-straight lines efficiently.
Current path operations have limitations in length measurement due to path variations.

Purpose of the Study:

Introduce a dimensionality-independent implementation of path opening and closing.
Propose constraints to enhance path operations for accurate length measurements.
Utilize path operations in granulometry for direct length distribution analysis of elongated structures.

Main Methods:

Implemented a dimensionality-independent path opening and closing algorithm.
Developed and applied a constraint to path operations for length measurement accuracy.
Integrated constrained path operations into a granulometry framework.

Main Results:

Achieved a robust, dimensionality-independent implementation of path operations.
Demonstrated improved accuracy in length measurements using constrained path operations.
Successfully obtained length distributions of elongated structures from gray-value images without binarization.

Conclusions:

Constrained path operations offer a reliable method for length measurement in image analysis.
Granulometry with path operations provides direct length distribution analysis of elongated structures.
This approach avoids image binarization and object identification, simplifying analysis.