Abstract: A method of making a video stream from a plurality of viewports within large format imagery is described. In one embodiment, the method includes retrieving a plurality of viewports within a plurality of images, each image being arranged as a matrix of tiles, from a file container. The method includes inputting parameters including an identification of a plurality of records where the plurality of images containing the plurality of viewports are stored, an origin of each of the plurality of viewports and a pixel width and a pixel height of each of the plurality viewports. The method further includes requesting the plurality of viewports from the file container using the parameters; and reading data of each of the plurality of viewports starting from the origin of each or the plurality of viewports. The method may further include arranging the plurality of viewports as a video codestream of a group of pictures.

Abstract: A method of creating a container file for large format imagery and organizing data within the container file are described. In one embodiment, the method of creating the container file includes validating user input parameters for the file container, and determining whether the container file already exists, the container file having file container metadata. If the file container does not exist, creating the container by creating one or more empty records in a storage device, the one or more empty records having an image file section reserved for storing an image, an image metadata section reserved for storing data about the image and a record metadata section having at least a mark indicating that the image file section is empty. A size of the image file section, a size of the image metadata section and a size of the record metadata section are determined using the user input parameters.

Abstract: A method of processing a viewport within large format imagery is described. In one embodiment, the method includes dividing the image into a matrix of a plurality of tiles, each tile in the plurality of tiles having a plurality of pixels; defining a viewport within the image, the viewport including one or more tiles in the plurality of tiles, the viewport having an origin point and a width and a height; and reading a strip of pixel data in each column of the matrix of tiles within the viewport starting at a column in the matrix of tiles containing the origin point. The strip of pixel data starts at a first line of the viewport and ends at the height of the viewport from the first line.