Chromagnon

Chromagnon corrects chromatic shifts in multicolor fluorescence microscopy images to enable precise three-dimensional registration across fluorescence channels.

Key Features:

• Quadrisection phase correlation: Computationally calculates translation, rotation, and magnification using reference images.
• Local per-region correction: Divides images into smaller elements to measure and correct local chromatic shifts between channels.
• 3D precision: Achieves shift correction precision up to approximately 15 nanometers in three dimensions.
• Uncertainty quantification: Quantifies uncertainty levels associated with chromatic shift corrections across imaging modalities and calibration methods.

Scientific Applications:

• Multichannel image registration: Precise alignment of different fluorescence channels for multicolor microscopy datasets.
• High-resolution and deep-penetration imaging: Correction of chromatic aberrations arising in fluorescence microscopy with increased spatial resolution and penetration depth.
• Correction for sample dispersion effects: Mitigation of chromatic shifts caused by unknown dispersion properties within biological samples.
• Quantitative evaluation: Assessment and comparison of calibration methods and imaging modalities via uncertainty estimates.
• Nanoscale biological analyses: Supports biological measurements and analyses that require ~15 nm registration accuracy.

Methodology:

Employs a quadrisection phase correlation approach that computes translation, rotation, and magnification from reference images, divides images into smaller elements to measure and correct local chromatic shifts between channels, and quantifies uncertainty of the corrections across imaging modalities and calibration methods.