Abstract: The present invention relates to a method for composing a scene containing a plurality of objects, an object comprising chrominance and luminance components, a chrominance value being associated with a set of at least two luminance values, wherein said method comprises a step of blending a first object with a second object resulting in a blended object, said step comprising the sub-steps of:—generating a luminance component of the blended object from the corresponding luminance components of the first and second objects and from a first composition function, and—generating a chrominance component of the blended object from the corresponding chrominance components of the first and second object and from a second composition function, the second composition function depending on a set of associated values of the first composition function.

Abstract: The present invention relates to a method for composing a scene containing a plurality of objects, an object comprising chrominance and luminance components, a chrominance value being associated with a set of at least two luminance values, wherein said method comprises a step of blending a first object with a second object resulting in a blended object, said step comprising the sub-steps of:—generating a luminance component of the blended object from the corresponding luminance components of the first and second objects and from a first composition function, and—generating a chrominance component of the blended object from the corresponding chrominance components of the first and second object and from a second composition function, the second composition function depending on a set of associated values of the first composition function.

Abstract: The present invention relates to a memory circuit (MEM) able to receive a first data block comprising a number of components and coming from an external memory (EXT) for them to be written (W) in an internal memory. The memory circuit is also able to supply (R) to an output device (FIL) a second data block comprising a component of said data. The memory circuit comprises data banks able to receive data words, and address controllers associated to the data banks and able to organize a reading or writing access of the data in the internal memory of the memory circuit, while minimizing the number of data banks used. Thus it is possible to rapidly read or write in the memory circuit at relatively low cost.

Abstract: The present invention relates to a memory circuit (MEM) able to receive a first data block comprising a number of components and coming from an external memory (EXT) for them to be written (W) in an internal memory. The memory circuit is also able to supply (R) to an output device (FIL) a second data block comprising a component of said data. The memory circuit comprises data banks able to receive data words, and address controllers associated to the data banks and able to organize a reading or writing access of the data in the internal memory of the memory circuit, while minimizing the number of data banks used. Thus it is possible to rapidly read or write in the memory circuit at relatively low cost.

Abstract: The composition of an image [IM] comprises the step of mapping [MAP] a set of image sample values [SV] from a departure space [DEP] to an arrival space [ARR] in accordance with a geometrical transformation [T]. A zone in the departure space [ITL] is computed by applying the inverse geometrical transformation [T−1] to a zone in the arrival space [TL] covering a group of image samples. A group of input values [IV] is established for the zone in the departure space [ITL]. The group of input values [IV] comprises Boolean values [BV]. A Boolean input value has a certain position (xd, yd) in the departure space and designates the other input values having the same position as being non-valid if the position is outside the set of image sample values [SV]. The group of image samples [TL] is composed from the group of input values [IV].

Abstract: A set of image samples [IS] is established from a set of image sample values [SV] and geometrical parameters [V1, V2, V3] in the following manner. In an initialization step [INIT], a mask [MSK] is generated from the geometrical parameters [V1, V2, V3]. In a mapping step [MAP], the set of image sample values [SV] is mapped on the set of image samples [IS]. The mask [MSK] intervenes in this mapping.