Abstract: A method and system for processing a digital image of an object comprises forming a single pixel image outline of the object in a digital image and producing a measure of the outline shape as a single number. In this way risk of spina bifida can be determined from an ultrasonic image of a fetal skull.

Abstract: A method and system for processing a digital image of an object comprises forming a single pixel image outline of the object in a digital image and producing a measure of the outline shape as a single number. In this way risk of spina bifida can be determined from an ultrasonic image of a fetal skull.

Abstract: In a reception system which includes a receiver having a plurality of inter-connected stages and a demodulator, and where there appears at an input of the receiver a desired signal which occupies substantially a predetermined bandwidth, and at least one undesired signal which occupies a bandwidth different from, though partially overlapping the predetermined bandwidth, the improvement includes a signal selector coupled to receiver terminals upstream of the receiver demodulator for normally continuously selecting one of the signals appearing across the receiver terminals, a gain-controlled feedback stage connected with one input thereof to an output of the signal selector for negatively feeding back to the receiver terminals one of the signals substantially 180.degree.