Abstract: A recompressed-sensing recording means, apparatus, device, or system captures one or more recordings, of possibly unknown or unbounded duration, into a finite memory, by resparsifying previously recorded sensor data in order to make room to store new incoming sensor data. In some embodiments this resparsification is recursive, resulting in a fraccular (fractally circular) buffer. In some embodiments a LightSpaceTimeLapse image capture means, apparatus, or system captures the passage or stoppage of time, by way of analyzing a scene or subject matter that is subject to changes in lighting or changes in the subject matter, or both. In some embodiments a sparse or reduced resolution test image is captured periodically, and a LightSpaceTime model is constructed to estimate changes in LightSpace or SpaceTime or both. Successive frames feed into a LightSpaceTime comparator which triggers full resolution capture into a finite memory at appropriate intervals.