Vídeófundir

Vídeófundir is a term used in audiovisual processing to describe the technique of merging multiple video inputs into a single representation. The fusion can be performed across space, time, or modalities, producing a composite frame, sequence, or video stream. The term combines the word video with fundir, meaning to fuse or melt, and its usage can vary by field; some sources refer to it as video fusion.

In practice, vidéófundir encompasses several approaches. Temporal fusion combines frames to reduce noise, extend dynamic range, or reveal transient details. Spatial fusion blends information from overlapping viewpoints or sensor channels to produce a more informative image. Multi-sensor fusion merges data from different modalities, such as infrared and visible light, to improve interpretability. Algorithms range from simple arithmetic blending to advanced techniques like wavelet-based, PCA-based, or learning-driven fusion. In film and television production, vidéófundir may be used to merge different takes or exposures for greater detail and consistency; in surveillance and robotics, it helps integrate data from multiple cameras or sensors for better scene understanding.

Challenges include accurate alignment and registration, motion-induced artifacts, ghosting, color and luminance inconsistencies, and computational demands. Achieving high-quality fusion requires robust calibration, reliable motion compensation, and effective artifact suppression, as well as maintaining temporal coherence across frames.

The term is not universally standardized; many contexts simply use "video fusion" or "image fusion" to describe similar concepts. Vídeófundir remains a descriptive label for the broad practice of combining multiple video sources into a single representation.