Computer vision is a rapidly growing segment of artificial intelligence, comprising diverse practical applications and practices. The interest and growth of computer vision are becoming sky‐high nowadays due to its significant role in building a smart and autonomous society. The accumulated significance in the field of autonomous cars, smart buildings, video‐surveillance systems, augmented‐reality tools, and last not the least, fashion recommender system enforce human society to pay their keen interest in analyzing 1D, 2D, and 3D signals like speech, images, and videos, respectively. The hidden efforts become harder while stepping from speech to video due to dimensionality increment. But computer vision and its applications are mostly centered around the analysis of images and videos. Spatial interpretation plays a pivotal role in image analysis and both spatial and temporal understanding make things easier for video analysis. We can interpret the image as a stepping stone while analyzing video signals. A video signal carries greater significance among all three due to deeper situational understanding, as it has an extra‐temporal dimension compared to an image signal. The introduction of deep learning makes the rest of things easier and has pushed the limits of possibility in the sphere of digital image and video processing. The deep‐learning technique is nothing but all about “credit assignment” over multiple neural‐network layers effectively and without supervision and is of current interest due to supporting evolutions in processing hardware. The self‐organization and the collaborative management between atomic units of the network have been recognized to perform better than central control, especially for the complicated non‐linear process. Improved fault tolerance and new data adaptability can be achieved through this technique. So, this chapter summarizes the significance of deep learning in digital‐image processing that, in turn, leverages the processing of 3D video data.