Moving image data encoding apparatus capable of encoding moving images using an encoding scheme in which a termination process is performed

摘要

When encoding moving images using an encoding scheme in which a termination process is performed, controlling so that a picture to be encoded after a picture whose encoding has been forcibly terminated does not refer to the picture whose encoding has been forcibly terminated. By so doing, encoding using a reference picture with low correlation is suppressed and encoding efficiency can be improved.

主权项

1. An image sensing apparatus comprising:
an image sensing unit that generates moving image data by using an image sensor; a memory that stores program instructions; and at least one processor that executes instructions stored in the memory, wherein the instructions cause, when executed, the at least one processor to encode pictures that constitute moving image data with encoding schemes that use intraframe coding and interframe prediction coding, and generate encoded picture and a locally decoded picture, wherein the locally decoded picture is stored in a frame memory that stores a plurality of locally decoded pictures as candidates of a reference picture used in the interframe prediction coding, wherein the at least one processor, during coding a picture, performs an encoding termination process that drastically reduces an amount of generated code from spatially partway in a picture being encoded by drastically cutting high-frequency components of the picture, in a case in which the amount of already generated code of the picture exceeds a first predetermined value, so that a total amount of code generated for the entire picture is within a second predetermined value, and wherein when a picture is going to be encoded with interframe prediction coding, and the termination process has been performed on a predetermined reference picture that is one of the locally decoded pictures stored in the frame memory and has initially been assigned to be used as a reference picture in the interframe prediction coding of the picture, the at least one processor selects another locally decoded picture, on which the termination process has not been performed, from the locally decoded pictures stored in the frame memory, to be used as an alternative of the predetermined reference picture.