초록 ▼

A CCD imaging array is operated in a time delay and integration mode to generate an array of charge packets corresponding to the light intensity at the picture elements of an irradiating image. The charge packets from the imaging array are gated in parallel to a line image storage array that stores

A CCD imaging array is operated in a time delay and integration mode to generate an array of charge packets corresponding to the light intensity at the picture elements of an irradiating image. The charge packets from the imaging array are gated in parallel to a line image storage array that stores n rows of charge packets in a columnar relation. A replicator circuit generates a replicated sum charge for each column of charge packets of the line image storage array. Each replicated sum charge corresponds to the sum of the n charges stored in a column at a particular instant in time and the charge stored at the (n+1)/2 position of each column is the middle charge for the associated replicated sum charge. Parallel delay gating electrodes gate a row of replicated sum charges to an area average serial shift register at the same time that a row of corresponding middle charges is gated into a focused element serial shift register. The serial shift registers are gated synchronously in a serial fashion and, as the registers are gated, the endmost n replicated sum charges are summed by a horizontal summer and 1/n2 of the sum is subtracted by a comparator from an associated central charge stored in the focused element serial shift register. The difference is the Laplacian for the central charge. The output of the focused element serial shift register, the summer output, and the Laplacian are useful for subsequent image processing.

대표청구항 ▼

A charge transfer device for measuring the radiation intensity of picture element portions of successive lines of an incident radiation image and deriving an average radiation intensity for an averaging area about each picture element, comprising: imaging array means for generating a row of charge p

A charge transfer device for measuring the radiation intensity of picture element portions of successive lines of an incident radiation image and deriving an average radiation intensity for an averaging area about each picture element, comprising: imaging array means for generating a row of charge packets for each of said lines of the incident radiation image, the magnitude of charge of each charge packet proportional to the radiation intensity of a picture element portion of the corresponding line of radiation; array means for receiving in parallel successive rows of charge packets from said imaging array means and storing n rows in sequence in a columnar relation, and for passing the nth stored row of charge packets from the array means for each row of charge packets that is received by the array means; first serial register means for receiving in parallel each row of charge packets that is passed from the array means and for serially transmitting the charge packets of the received row; column summing means responsive to at least the storing of a row of charge packets in said array means for forming a row of replicated charge packets, each replicated charge packet having a charge magnitude proportional to the sum of the charge packets stored at a particular associated column of the n rows of charge packets stored in the array means; second serial register means for receiving in parallel a row of said replicated charge packets and serially transmitting the replicated charge packets of the received row; and gating delay means for gating a particular row of replicated charge packets in parallel from said column summing means and into said second serial register means when a particular corresponding row of charge packets is received by said first serial register means.