Improve stitching

[marekhummel]

• Refactor implementation (minimize parameters, ...)
• Implement both seaming and carving as alternatives
• Stabilize stitching (preset output size)
• Remove artifacts (leftover texts, rope) with better config
• Improve performance of computation

[marekhummel]

Horizontal seam carving Set initial homography as ground truth (dont deviate too far) Color correction before homography Blending after stitching

[marekhummel]

Mostly done.

• Color Correction as Preprocessor
• Outsource warping to OpenGL ?