QUBYX Brings DICOM Calibration and 3D LUT Color Management Inside the PACS with the PerfectLum SDK

WILMINGTON, Del. - July 7, 2026 - PRLog -- QUBYX, a developer of professional DICOM calibration and display color management software for the medical, creative, and broadcast industries, today announced the PerfectLum SDK (https://www.qubyx.com/), an application programming interface (API) that lets PACS and medical-imaging software manufacturers build full DICOM calibration, color management, and 3D LUT color support directly into their own applications. The SDK moves precise, pixel-level color control out of the display hardware and into the PACS itself — allowing a different calibration to be applied to each image on screen, matched to the modality it came from.

For decades, the DICOM calibration of a medical image has been a property of the monitor. A medical-grade display is calibrated to the DICOM Grayscale Standard Display Function (GSDF) for radiology, and every image routed to that screen is rendered through the single correction baked into the monitor's hardware. That model works when one screen shows one kind of image. It breaks down on today's reading stations, where a radiograph, a color-coded PET or SPECT overlay, a digital-pathology slide, and an ultrasound Doppler loop may all share the same display at the same time.

The PerfectLum SDK resolves this by giving the PACS application direct control of the pixels. Because the application — not the monitor — now owns the color transform, it can apply the right correction to the right frame: a DICOM GSDF grayscale calibration in the radiology viewport, a perceptually uniform CIELAB color transform for a pseudo-color functional overlay, and a pathology-specific profile for a whole-slide image, each rendered correctly and consistently in its own window, all on the same screen and at the same moment.

Delivering the transform as a 3D LUT inside the application is what makes per-frame DICOM calibration possible. A 3D look-up table maps every input color to an explicitly chosen output color across the entire color volume — enough to carry GSDF or CIELAB response correction, white-point correction, gamut mapping, and channel-crosstalk compensation at once — where a traditional 1D curve or 3×3 matrix can only reshape each channel in isolation.

About QUBYX
QUBYX develops professional display calibration and color management software for the medical, creative, and broadcast industries. Its products include PerfectLum (DICOM/medical display calibration), PerfectChroma (creative and broadcast color workflows), and QUBYX OS Tools (open-source SDK for 3D LUT and ICC profile generation), with QubyxViewer providing open-source ICC profile and 3D LUT validation and preview. Learn more at www.qubyx.com.