Local interpolation: Third-order

This lecture covers different interpolation techniques, starting with zero-order interpolation using the 'zero-order hold' method, followed by first-order interpolation with a 'connect the dots' strategy, and finally, third-order interpolation. The instructor explains the concept of local interpolation schemes, where the interpolator's requirements are discussed, emphasizing the importance of the interpolator's characteristics. Various local interpolators are presented, showcasing their effectiveness in reconstructing signals accurately.