Related Experiment Video
Updated: May 11, 2026
09:49
Holistic Facial Composite Creation and Subsequent Video Line-up Eyewitness Identification Paradigm
Published on: December 24, 2015
Color invariants for person reidentification
Igor Kviatkovsky1, Amit Adam, Ehud Rivlin
1Department of Computer Science, Technion-Israel Institute of Technology, Technion City, Haifa 32000, Israel. kviat@cs.technion.ac.il
Summary
This study introduces a new method for object recognition using color distributions. The novel intradistribution structure is invariant to lighting changes, improving person identification accuracy.
Area of Science:
- Computer Vision
- Pattern Recognition
- Image Analysis
Background:
- Specific object recognition, particularly person identification, often relies on color distributions.
- Color distributions can be multimodal and possess inherent structures.
- These structures change under varying illumination but retain invariant aspects.
Purpose of the Study:
- To develop a robust object recognition method using color distributions.
- To identify and leverage invariant structures within color distributions under changing lighting conditions.
- To enhance the accuracy of specific person identification.
Main Methods:
- Utilizing an "intradistribution structure" invariant to illumination changes.
- Employing shape context descriptors to represent this intradistribution structure.
- Validating invariance under illumination changes using a diagonal model.
Main Results:
- Color information alone achieved good recognition performance on diverse indoor and outdoor databases.
- The proposed signature demonstrated invariance to specific illumination variations.
- Combining the approach with covariance descriptors surpassed state-of-the-art results on VIPeR and CAVIAR4REID.
Conclusions:
- The intradistribution structure derived from color distributions offers a practical and invariant feature for object recognition.
- This method shows significant promise for person identification and other recognition tasks.
- The approach achieves superior performance, outperforming existing state-of-the-art methods.
Related Concept Videos
01:28Methods of Classification and Identification
Bacterial identification relies on a diverse array of techniques to classify and understand microorganisms, each tailored to uncover specific characteristics. Traditional morphological approaches, while still valuable, are limited for closely related or structurally simple organisms. Modern methods integrate biochemical, serological, genetic, and advanced molecular tools to achieve greater accuracy.Morphological and Biochemical TechniquesMorphological characteristics, such as cell shape and...
01:25Personal Identity
Personal identity is the deeply felt sense of self that individuals cultivate over time, intricately woven from intrinsic qualities they consider essential to their existence—qualities such as morality, intelligence, and friendliness. These attributes serve as vital internal benchmarks, guiding individuals in evaluating whether their actions resonate with their true selves.When personal identity takes center stage in one's life, individuals often emphasize their distinctiveness, highlighting...
01:16Second Uniqueness Theorem
Consider a region consisting of several individual conductors with a definite charge density in the region between these conductors. The second uniqueness theorem states that if the total charge on each conductor and the charge density in the in-between region are known, then the electric field can be uniquely determined.
In contrast, consider that the electric field is non-unique and apply Gauss's law in divergence form in the region between the conductors and the integral form to the surface...
In contrast, consider that the electric field is non-unique and apply Gauss's law in divergence form in the region between the conductors and the integral form to the surface...
01:12Perceptual Constancy
Perceptual constancy is the ability to recognize that objects remain consistent and unchanged even when their appearance varies due to changes in sensory input. There are four main types of perceptual constancy: size constancy, shape constancy, color constancy, and brightness constancy.
Size constancy is the recognition that an object remains the same size, even when its image on the retina changes. For instance, a bus is perceived to be large enough to carry people, even if it looks tiny from...
Size constancy is the recognition that an object remains the same size, even when its image on the retina changes. For instance, a bus is perceived to be large enough to carry people, even if it looks tiny from...
01:24Color Vision
Color perception begins in the retina, the light-sensitive layer at the back of the eye. Two main theories explain how colors are seen: the trichromatic theory and the opponent-process theory. The trichromatic theory, proposed by Thomas Young in 1802 and extended by Hermann von Helmholtz in 1852, suggests that color vision is based on three types of cone receptors in the retina. These cones are sensitive to different but overlapping ranges of wavelengths corresponding to red, blue, and green.
02:03Law of Independent Assortment
While Mendel’s Law of Segregation states that the two alleles for one gene are separated into different gametes, a different question of how different genes are inherited remains. For example, is the gene for tall plants inherited with the gene for green peas? Mendel asked this question by experimenting with a dihybrid cross; a cross in which both parents are homozygous for two distinct traits resulting in an F1 generation that are heterozygous for both traits.