| 摘要 |
A method for low-loss transformation and/or compression of a data stream of input signals (S12Bit) with a first bit depth into a data stream of output signals (S8Bit) with a second bit depth using a transfer function, in which a noise component of the input signals (S12Bit) is taken into account. The transformation and/or compression may be at least partly reversible and the input and output signals are preferably image signals. The method may be used for contrast enhancement of a data stream of image signals, where after low-loss transmission/compression is done, with a first and second bit depths, a contrast enhancement is performed in the data stream of intermediate image signals and after which, a number of bits, in particular the lowest bits, of the intermediate image signals are removed from the data stream to obtain an output image signal with the output bit depth. Also claimed is a signal processing unit to perform the method. |
