# Tri-Subject Kinship Verification: Understanding the Core of A Family

Source: [Tri-Subject Kinship Verification: Understanding the Core of A Family](<https://www.sota2.com/research/paper/68fa62011e209131ce9f7250>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-25T20:11:29.310Z

Authors: Xiaoqian Qin, Xiaoyang Tan, Songcan Chen

Published: 2015-01-12T07:32:45.000Z

## Abstract

One major challenge in computer vision is to go beyond the modeling of individual objects and to investigate the bi- (one-versus-one) or tri- (one-versus-two) relationship among multiple visual entities, answering such questions as whether a child in a photo belongs to given parents. The child-parents relationship plays a core role in a family and understanding such kin relationship would have fundamental impact on the behavior of an artificial intelligent agent working in the human world. In this work, we tackle the problem of one-versus-two (tri-subject) kinship verification and our contributions are three folds: 1) a novel relative symmetric bilinear model (RSBM) introduced to model the similarity between the child and the parents, by incorporating the prior knowledge that a child may resemble a particular parent more than the other; 2) a spatially voted method for feature selection, which jointly selects the most discriminative features for the child-parents pair, while taking local spatial information into account; 3) a large scale tri-subject kinship database characterized by over 1,000 child-parents families. Extensive experiments on KinFaceW, Family101 and our newly released kinship database show that the proposed method outperforms several previous state of the art methods, while could also be used to significantly boost the performance of one-versus-one kinship verification when the information about both parents are available.

## Recorded benchmark results

A research result applies to its stated dataset, split, metric and evaluation configuration. Compare like-for-like settings, preserve the metric's unit and direction, and distinguish paper-reported results from independent reproduction. The best result recorded here is not a claim of exhaustive, current global coverage.

- [Kinship Verification on TSKinFace](<https://www.sota2.com/research/sota/kinship-verification-on-tskinface.md>): Kinship Verification; TSKinFace; Accuracy (FM-S): 86.4.

## Original sources and implementation

[Original paper](<https://arxiv.org/abs/1501.02555>)

[PDF](<https://arxiv.org/pdf/1501.02555.pdf>)