US Patent 9699465 Method and device for partitioning an image

A method and device for partitioning an image for transmission of one or more regions of interest of said image, the image being composed of coding units, the method comprising:performing a first partitioning of the image into one or more portions of coding units, wherein each portion is encodable or decodable without any coding dependency on another of the portions, a region of interest comprising at least one portion; andperforming a second partitioning the image onto one or more segments of coding units comprising at least one independent segment which is encodable or decodable without any coding dependency on another of the segments and at least one dependent segment which is dependent on the independent segment for coding or decoding, the second partitioning being based on the portions of the first partitioning;wherein at least part of one of the portions is encoded in an independent segment and at least part of another of the portions is encoded in a dependent segment.