An innovative automated software tool by Team byteforce designed to align Chandrayaan-2 optical images (OHRC, TMC, IIRS) with lunar reference maps with sub-pixel accuracy. Completely sun-angle and scale invariant.
Handles extreme sun-angle changes using Multi-Scale Retinex (15, 80, 250) + CLAHE for a sun-angle invariant representation.
Combines Dynamic Scale Pyramids (4x to 1/8x) with Affine-SIFT to achieve complete viewpoint and scale invariance.
Utilizes MAGSAC homography estimation coupled with Spatial Grid Bucketing to guarantee uniformly distributed inliers.
Implements CornerSubPix homography to push matching precision beyond the pixel level for ultimate accuracy.
Applies Homography (USAC MAGSAC) with an intelligent fallback to TPS (Thin Plate Spline) for optional non-rigid alignment.
Generates detailed metrics (RMSE, SSIM, MI) alongside interactive 3D Topographic visualization and mission-ready PDF reports.
Mature, open-source, and space-proven frameworks.
High Accuracy
Robust & Reliable
Modular Architecture
Open-Source Stack
Target Audience: ISRO & Space Agencies, Researchers, and Academia.
SPARK empowers India's leadership in lunar science by automating cross-sensor image alignment for precise mapping, analysis, and mission planning.