We conduct a thorough study of photometric stereo under nearby point light source
illumination, from modeling to numerical solution, through calibration. In the classical …

Abstract Multi‐Light Image Collections (MLICs), ie, stacks of photos of a scene acquired with
a fixed viewpoint and a varying surface illumination, provide large amounts of visual and …

We propose a novel pipeline and related software tools for processing the multi-light image
collections (MLICs) acquired in different application contexts to obtain shape and …

There is an increasing demand for high-resolution recording of in situ underwater cultural
heritage. Reflectance transformation imaging (RTI) has a proven track record in terrestrial …

Reflectance transformation imaging (RTI) is a technique employed to assess both the
intensity and directional properties of light reflected from an object, aiming to visualize an …

Reflectance Transformation Imaging (RTI) is widely used to produce relightable models from
multi-light image collections. These models are used for a variety of tasks in the Cultural …

In this paper, a calibration method for non-isotropic point light source is developed, which is
capable of calibrating position and orientation of the point light source with a single image …

Relightable images have been widely used as a valuable tool in Cultural Heritage (CH)
artifacts, including coins, bas-reliefs, paintings, and epigraphs. Reflection Transformation …

A Lambertian surface is a kind of very important assumption in shape from shading (SFS),
which is widely used in many measurement cases. In this paper, a novel scaled SFS method …

We present an automated light calibration pipeline for free-form acquisition of shape and
reflectance of objects using common off-the-shelf illuminators, such as LED lights, that can …