The present invention provides a method and device for optically
extracting discrete features of an object. With this method and device,
small regions of interest or features within a relatively large object
are optically extracted and collated into a single, condensed image. The
condensed image contains all of the features in the original object, but
not the parts of the object that are between the features. Thus, the
optically extracted features can be viewed at high resolution, but in a
limited field of view. Examples of objects that may be optically
extracted according to the invention include spots of biomaterial on a
biochip, material in wells of a microtiter plate, etc. In addition, this
device and method can be used for non-planar objects. In this case, the
device and method allow simultaneous visualization of spatially separated
features on a surface of a 3-dimensional object.