Method and device for decoding an image
AssigneeCanon Kabushiki Kaisha
InventorsFabrice Le Leannec, Patrice Onno
Life of this patent
Estimating the term…
Abstract
In order to decode and display a previously compressed digital image portion, a first portion of this image being previously decoded and displayed in a first display window:—a request of a user defining a direction of movement in the image is read (115);—a new display window in the image is determined (119) as a function of this movement;—at least one area to be decoded and a decoding direction is determined (121) from the relative position of the new display window with respect to the first display window and this area is decoded and displayed (125, 127, 129) according to the decoding direction determined.
Claims21
A method of decoding and displaying a previously compressed digital image, a first portion of the image being previously decoded and displayed in a first display window, said method comprising the steps of:
- reading a request of a user defining a movement direction representing the direction from the previously decoded and displayed first portion of the image to at least one undisplayed and coded area of the previously compressed digital image that will be decoded and displayed;
- determining a new display window in the image as a function of the movement;
- determining the at least one undisplayed and coded area of the previously compressed digital image to be decoded and a decoding direction of the at least one undisplayed and coded area of the previously compressed digital image from the relative position of the new display window with respect to the first display window;
- decoding and displaying the at least one previously undisplayed and coded area of the previously compressed digital image according to the determined decoding direction.
A device for decoding and displaying a previously compressed digital image, a first portion of the image being previously decoded and displayed in a first display window, said device comprising:
- a unit that reads a request of a user defining a movement direction in the image representing the direction from the previously decoded and displayed first portion of the image to at least one undisplayed and coded area of the previously compressed digital image that will be decoded and displayed;
- a unit that determines a new display window in said image as a function of said movement;
- a unit that determines the at least one undisplayed and coded area to be decoded of the previously compressed digital image and a decoding direction of the at least one undisplayed and coded area of the previously compressed digital image from the relative position of the new display window with respect to the first display window;
- a unit that decodes and displays the at least one previously undisplayed and coded area of the previously compressed digital image according to the determined decoding direction.
A device for decoding and displaying a previously compressed digital image, a first portion of the image being previously decoded and displayed in a first display window, said device comprising:
- means for reading a request of a user defining a movement direction in the image representing the direction from the previously decoded and displayed first portion of the image to at least one undisplayed and coded area of the previously compressed digital image that will be decoded and displayed;
- means for determining a new display window in said image as a function of said movement;
- means for determining the at least one undisplayed and coded area to be decoded of the previously compressed digital image and a decoding direction of the at least one undisplayed and coded area of the previously compressed digital image from the relative position of the new display window with respect to the first display window;
- and
- means for decoding and displaying the at least one previously undisplayed and coded area of the previously compressed digital image according to the determined decoding direction.
Dependencies are inferred from the claim text.