Provided are an image processing apparatus, an image processing method, a program, and a camera which are cable of generating a joined image in which distortions and seams are less likely to occur. An image processing apparatus according to an exemplary embodiment generates a joined image by joining a plurality of textures based on a plurality of images, and includes a second derivation unit that derives a motion between images of the plurality of images, and a texture writing unit that writes, into a frame memory, the plurality of textures that form the joined image, based on the motion between the images. The plurality of textures include a texture having such a shape that at least a part of an outline thereof is curved.