Sampling Schemes for Recontruction of Multidimensional from Multiple Level Threshold Crossings

t has been shown that under certain conditions multidimensional signals can be recovered from one-level crossings (e.g. o crossings) However, the accuracy wlth which the locans of the one-level crossings need to .be specified is large ough to limit its applicabllity in practical situations. To ercome this problem, we derive two sampling strategies for construction of multidlmensional signals from multiple level reshold crossings. We then propose two reconstruction alrithms for each of the two sampling schemes, and present a preliminary lnvestigation of their quantization characteris-