Fernando Voltolini de Azambuja

Imaging Engineering & Color Science

I build C++20, Python, and Swift/Metal tools for camera and display image quality, color science, and HDR/SDR research. My work combines sensor-level analysis, numerical methods, and hands-on color measurement with professional studio experience as a Photographic Assistant and Digital Capture Technician.

Composite portrait of a cellist layered with saturated color blocks, vertical scan lines, and enlarged hands on a string instrument.
Original photograph and digital composite by Fernando

Selected work

Stimulus editor showing two gray disks on a black field, with a layer inspector reporting per-layer luminance in cd/m², the size mode, and the display's extended-range context.

HDR psychophysics platform

A macOS platform for authoring and running HDR and SDR psychophysics studies, built to keep requested stimulus state, realized renderer state, and measured output as three separate records.

A non-contact spectroradiometer aimed at a reflective display, with a reference disk nearby.

Display color · measurement · rendering

Reflective Color Display Engineering

An experimental ICC route lowered average color error on a 133-color test grid. Exact pattern measurements then showed how pixel arrangement, image surroundings and display history could change measured color. I tested when those effects could be predicted and built an offline renderer with explicit color and halftoning choices.

Read the visual case study →

The calculator with stimulus and adopted-white inputs beside a results table of CAM16 and 2022-proposal appearance correlates.

CAM16 and Hellwig–Fairchild calculator

Enter an XYZ value and viewing conditions to compare how CAM16 and the 2022 proposal describe appearance. The calculation runs in the browser without installation.

Color Atlas showing a CAM16 constant-hue plane, with chroma increasing rightward and lightness increasing upward beside the viewing controls.

Color Atlas: Exploring Color Appearance

An interactive MATLAB app for exploring hue, lightness and chroma. Move through color planes, adjust viewing conditions, and distinguish the selected RGB gamut from the limits of an sRGB preview.

From photography to imaging systems

My B.F.A. in Professional Photographic Illustration included the Advertising Photography option and a minor in Applied Imaging Systems. That background joined lighting, capture, and visual judgment with the technical questions that now drive my camera, color, and display work.

Multiple-exposure cellist portrait over vertical bands shifting from blue and magenta through red, yellow, and green.
Original photograph and digital composite by Fernando

Imaging and color measurement

Eight public investigations connect camera sharpness, sensor-level uniformity, color characterization, spectral analysis, instrument measurement, and color-management algorithms. The studies lead with what was found; reports, formulas, aggregate data, and tested C++20 excerpts remain available one level deeper.

Explore the imaging portfolio or inspect the technical repository.

HDR/SDR psychophysics research platform

I built an end-to-end Swift/Metal macOS research application for study authoring, controlled execution, response and session records, HDR presentation state, measurement context, psychometric analysis, and structured export as part of my M.S. thesis under Dr. Mark D. Fairchild.

See how the platform separates requested state from measured output.

Camera and photographic practice

My experience includes color-managed capture and output, digital and film systems, studio lighting, video, camera and image-quality evaluation, and color measurement. In an advertising studio I supported professional capture, lighting, and color-managed workflows. At RIT I spent four continuous years as a Photographic Equipment Student Manager, supporting a 3,000+ item facility and supervising 35+ student employees.

Black-and-white portrait of a cellist leaning into the instrument against a plain dark background.
Original monochrome photograph by Fernando

Current focus

Camera and display measurement, color prediction and rendering, spectral analysis, HDR/SDR experimentation, and modern C++.

GitHub · LinkedIn