Device for image decomposition using a wavelet transform
AssigneeCommissariat A L'energie Atomique Et Aux Energies Alternatives
InventorsSebastien Courroux, Stephane Chevobbe, Mehdi Darouich, Michel Paindavoine
Life of this patent
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Abstract
A device for decomposing images into at least three levels by wavelet transform comprises a first unit executing a first level of decomposition and a second unit executing the higher levels of decomposition by performing a sequence of processing tasks. The tasks are ordered in time by using a sequence of rows, a routing unit serving to configure the second unit when the level of decomposition associated with the processing task currently being executed changes relative to the level of decomposition associated with the processing task executed previously. The processing tasks are ordered so that any given row is associated with only one level of decomposition.
Claims9
A device for decomposing images into at least three levels by wavelet transform, comprising:
- a first decomposition unit executing a first level of decomposition;
- a second decomposition unit executing higher levels of decomposition by executing a series of processing tasks, said processing tasks are ordered in time by using a sequence of rows;
- and
- a routing unit serving to configure the second decomposition unit when a level of decomposition associated with a processing task currently being executed changes relative to a level of decomposition associated with a processing task executed previously, the processing tasks being ordered so that any given row is associated with only a single level of decomposition,
- wherein the first and the second decomposition units and the routing unit are associated with the device for recomposing images and are configured and realized by a processor configured to execute a computer program code for wavelet transforms, and
- wherein the routing unit generates a configuration signal at a start of a row, to be sent to the second decomposition unit having processing modules in order to parameterize a data path of said processing modules.
A device for decomposing images into at least three levels by wavelet transform, comprising:
- executing a first level of decomposition at a first decomposition unit;
- executing higher levels of decomposition by executing a series of processing tasks at a second decomposition unit, the processing tasks are ordered in time by using a sequence of rows and are executed on one row out of two, the processing tasks associated with the higher levels being executed on other rows;
- and
- configuring the second decomposition unit at a routing unit when a level of decomposition associated with a processing task currently being executed changes relative to a level of decomposition associated with a processing task executed previously, the processing tasks being ordered so that any given row is associated with only a single level of decomposition, wherein a set of variables used as a timing reference is determined and updated periodically by the second decomposition, said set of variables corresponding to an index of a current row and a current column processed by the second decomposition unit.
A method for decomposing images into at least three levels by using a wavelet transform, the method comprising:
- executing a first level of decomposition at a first decomposition unit;
- executing higher levels of decomposition by executing a series of processing tasks at a second decomposition unit, said processing tasks are ordered in time by using a sequence of rows;
- and
- configuring the second decomposition unit using a routing unit when a level of decomposition associated with a processing task currently being executed changes relative to the level of decomposition associated with the processing task executed previously, the processing tasks being ordered so that any given row is associated with only a single level of decomposition,
- wherein the first and the second decomposition units and the routing unit are associated with the device for recomposing images and are configured and realized by a processor configured to execute a computer program code for wavelet transforms, and
- wherein the routing unit generates a configuration signal at a start of a row, to be sent to the second decomposition unit having processing modules in order to parameterize a data path of said processing modules.
Dependencies are inferred from the claim text.