1. A method for extracting data from a multi-touch sensing apparatus, said method operating in a sequence of detection frames, at least one detection frame among the sequence of detection frames comprising: obtaining at least one signal representative of objects on a touch surface of the multi-touch sensing apparatus; processing said at least one signal to identify touches; determining a set of identified touches and touch data for the set of identified touches; and outputting the touch data; wherein each of the detection frames includes a spatial prioritization, the spatial prioritization based on a previous touch, which is identified by the processing performed in one or more preceding detection frames; and wherein the processing said at least one signal to identify touches includes comparing a spatial distribution of signal values of the at least one signal with corresponding threshold signal values, using the spatial prioritization to estimate a location of a touch corresponding to the previous touch, and locally changing the corresponding threshold signal values based on the estimated location.