PsyCalibrator vs QUBYX PerfectLum
PsyCalibrator
github.comQUBYX PerfectLum
qubyx.comSide by side
| Figure | PsyCalibrator | QUBYX PerfectLum |
|---|---|---|
| Price from | Free | — |
| Free plan | Yes | — |
| Free trial | — | Yes |
| Open source | — | — |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| Plans published | 1 | 2 |
| Spec score · Display Calibration Software | 7.5 (#15) | 7.8 (#8) |
| Intended users | The tutorial describes using the package for luminance and color measurement and monitor correction in research workflows. | QUBYX identifies radiology departments, medical physicists, healthcare IT and PACS teams, diagnostic imaging centers, and hospital networks as intended users. |
| Purpose | PsyCalibrator is an open-source package for display gamma calibration and luminance and color measurement. | PerfectLum calibrates, verifies, and performs quality assurance for medical displays, including DICOM GSDF calibration. |
Plans
QUBYX PerfectLum
- PerfectLum License$480, paid once
- PerfectLum + SmartSensor S2$680, paid once
In their own words
PsyCalibrator
PsyCalibrator is a free, open-source package for measuring display luminance and color and calibrating gamma. It uses a Spyder5, SpyderX, or SpyderX2 instrument and returns measurements as CIE 1931 xyY coordinates. Its correction workflow adjusts the relationship between RGB intensity and luminance to be linear, for grayscale or individual color channels. The fitting process incorporates Mcalibrator2 and uses cubic spline interpolation as its main method. Users can apply correction through a color lookup table and restore the display to its uncorrected state. PsyCalibrator supports Windows, macOS, and Linux and includes multi-monitor calibration. Its research workflow requires MATLAB or GNU Octave, Psychtoolbox, and a supported Spyder instrument. The tutorial says Windows users need a photometer driver; Linux and Mac users do not. SpyderX and SpyderX2 can use built-in Windows 10 or 11 drivers with Psychtoolbox 3.0.19 or later. For more accurate measurements, the tutorial recommends keeping ambient light steady and using a sensor area smaller than the target stimulus.
QUBYX PerfectLum
QUBYX PerfectLum calibrates, verifies and runs quality assurance for medical displays, including DICOM GSDF calibration. It automates acceptance, constancy and routine QA tests with configurable pass/fail thresholds, scheduled daily, weekly, monthly or at custom intervals. Tests produce structured PDF reports with calibration and compliance results, luminance, contrast, ambient data and history. PerfectLum supports LUT calibration, ICC profile export and multi-monitor calibration for up to six displays. It works with QUBYX SmartSensor S1 and S2 and supported third-party measurement devices, and can connect to QUBYX RemoteQA for fleet monitoring, scheduled QA, failure tracking and centralized compliance reporting. Its workflows align with DICOM Part 14 GSDF, AAPM TG-18/TG-270, ACR, DIN 6868-157 and IEC 62563. QUBYX lists installers for Windows 10/11 x64 and macOS 12 or later on Intel and Apple processors. A free trial is available by email download link, with no duration stated. A workstation license costs $480 as a one-time purchase; a package with SmartSensor S2 costs $680, paid once.