Image processing device and method, and program

The present technique relates to an image processing device and method and a program that make it possible to obtain a high-quality panorama image when generating a 360-degree panorama image. A projection image generation unit generates projection images in such a way that images captured while rotating a camera 360 degrees are mapped on a cylindrical surface. A cumulative difference value calculation unit calculates the cumulative difference value between adjacent projection images at each position. A directed graph generation unit generates, based on the projection images and the cumulative difference value, a directed graph in which the cumulative difference value is reflected on the energy of an edge. According to the directed graph, a route search unit searches for the connection positions of projection images having the least breaks when connecting the projection images to each other to generate a panorama image. Based on the search result, a panorama image generation unit connects the projection images and generates the panorama image. The present technique is applicable to image processing devices.