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US 7,460,720 B2Granted
Method and device for defining quality modes for a digital image signal
AssigneeCanon Kabushiki Kaisha
InventorsJeanne Guillou, Maryline Clare
Life of this patent
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Abstract
This method of defining qualities for a digital image signal encoded beforehand consists of defining a predetermined number of quality modes each corresponding to at least one decoding parameter of the digital signal, this definition being made on the basis of rate information provided via a graphical interface and quality perception information provided via the visualization of the decoded digital signal.
Claims14
A method of defining qualities for a digital image signal encoded beforehand, comprising:
- defining, by a content creator, a predetermined number of quality modes, each quality mode corresponding to a predetermined number of quality layers of the digital image signal, on the basis of rate information provided via a graphical interface and perception quality information provided to said content creator via a visualization of the digital image signal decoded, wherein a digital image in a given one of the quality modes is obtained by decoding the digital image signal encoded beforehand using said predetermined number of quality layers, and wherein only the quality modes defined by said content creator are made accessible to a final user, wherein the rate information is represented in the form of a graph illustrating the size of a decoded image as a function of the number of quality layers, and wherein the perception quality information is represented in the form of a cursor illustrating the number of layers corresponding to each quality mode, displayed simultaneously with the decoded digital image signal.
A device for defining qualities for a digital image signal encoded beforehand, comprising:
- means for defining, by a content creator, a predetermined number of quality modes each corresponding to a predetermined number of quality layers of the digital image signal, on the basis of rate information provided via a graphical interface and perception quality information provided to said content creator via a visualization of the digital image signal decoded, wherein a digital image in a given one of the quality modes is obtained by decoding the digital image signal encoded beforehand using said predetermined number of quality layers, and wherein only the predetermined number of quality modes defined by said content creator are made accessible to a final user, wherein the rate information is represented in the form of a graph illustrating the size of a decoded image as a function of the number of quality layers, and wherein the perception quality information is represented in the form of a cursor illustrating the number of layers corresponding to each quality mode, displayed simultaneously with the decoded digital image signal.
Dependencies are inferred from the claim text.