HAE-HCI: Visible-Body Attention Axes for Progress-Photo Comparison: Preliminary Observation Categories for Structured Visible-Body Interpretation

This public concept note introduces Visible-Body Observation Axes as preliminary attention-oriented categories for progress-photo interpretation within the HAE-HCI research line. Progress photographs are widely used across fitness, rehabilitation, body tracking, coaching, physique development, and self-observation practices. However, progress-photo comparison is often treated as an intuitive visual activity rather than an explicit interpretive process. People may be encouraged to “compare photos” or “look at overall progress,” yet the specific features being observed, compared, weighted, or treated as meaningful often remain unstated. This document addresses that gap by distinguishing raw visual capture from structured visible-body observation. It proposes one possible set of provisional attention-orienting categories: Global Shape, Regional Volume, Ratio / Proportion, Contour / Line, Transition, Context, and Possible Decision Relevance. These categories are intended to make observation targets more explicit before interpretation, meaning attribution, or action occurs. The proposed axes do not constitute a validated checklist, diagnostic tool, beauty score, body-ranking system, coaching framework, exercise prescription model, nutritional recommendation system, or automated decision-making architecture. They are offered as conceptual categories for scholarly discussion, interface-design reflection, and future HCI-oriented research on visible-body interpretation, progress-photo comparison, body tracking, human-data interaction, and body-related visual records. This note forms part of the broader HAE-HCI conceptual research sequence and should be read as an exploratory, revision-ready contribution rather than as a validated assessment system. Invitation for Scholarly Dialogue Questions, brief comments, critical perspectives, and informal scholarly conversations are all welcome. Researchers and practitioners who find any part of this work relevant to their own interests are warmly invited to contact the author. You do not need to have read the entire framework, developed a formal position, or prepared a collaboration proposal. Partial impressions, preliminary questions, and brief messages are equally welcome. Contact: Sarang KangEmail: corsetmuscle@gmail.com Keywords: Human Aesthetic Engineering; HAE-HCI; Human–Computer Interaction; visible-body interpretation; visible-body attention axes; progress-photo interpretation; progress-photo comparison; structured observation; attention allocation; body tracking; self-tracking; Human–Data Interaction; interpretive interaction; body-related visual records; interface design; contextual interpretation; longitudinal interpretation; silhouette analysis; anthropometry Version:v1.1.3 — Public Concept Note / Working Paper