Uploaded full-canvas composite X-ray of *The Tree Oil Painting*, captured by the Thailand Institute of Nuclear Technology (TINT) between 2015–2018.

This image was constructed from multiple regional scans to cover the full surface of the canvas, enabling underpainting (underdrawing) analysis and torque-based brushstroke tracing. Due to the absence of varnish, retouching, or restoration, this X-ray offers a rare, unaltered structural view beneath the surface paint layer.

It has become a Master Reference for analyzing wrist torque, brushstroke rhythm, and painter identity—free from the distortions caused by varnish or modern conservation. When compared with museum-held works (which are often coated), this dataset allows deeper access to the raw biomechanics of the artist’s hand.