A method and system for automatic optical character recognition wherein a continuous flow of image data is processed at a scan rate high compared to the relative movement of the information-containing field across a sensor array. A two-dimensional array of photosensors is self-scanned to provide a continuous flow of binary character segment and void zone representations which are decoded by reference to a ROM to produce multi-bit feature codes characterizing unique relationships between line seg...

A reliable optical character recognition system substantially insensitive to variations in character stroke size is provided for reading numeric and special characters printed on a document surface in plural fonts of unknown order. More particularly, a character is scanned and its image stored in a two-dimensional mosaic without requiring precise positioning therein, amplitude correlation for video signal quantization, or normalization of character stroke sizes. The image mosaic is scanned by a ...

An optical character recognition system comprising a reader head which includes the single line array of photo-sensitive elements, a clock pulse generator under control of which the elements of the array are sequentially sampled to produce video output pulses one from each element, the level of each pulse being dependent upon the light incident upon the element from which it originated, all elements being sampled in one scan and the elements being scanned repeatedly, data storage means into whic...

A speech recognition system is realized by applying a speech signal to a feature extractor wherein a sequence of predetermined features representing the speech signal are determined, and by comparing the determined features, in an acceptor, to predetermined sequences of features which represent selected words. One attribute of the feature extractor is the ability to represent certain classes of sounds in terms of the position and direction of motion of the movable structures of a human vocal tra...

Herein disclosed is a character recognition system which comprises a video input device which obtains character video signals by raster scanning characters which exist on a medium; a quantization unit which converts said character video signals into binary code video signals; and a character centerline shaping device which transforms said binary code video signals into character centerline figures which are formed by the character centerlines of said binary code video signals. According to the c...

Method and apparatus for pattern recognition, and especially biological sample analysis, by optical scanning of a pattern to derive a waveform which is processed to provide data values defining the scanned pattern in terms of functions of the frequency of occurrence of elemental areas having various optical remissivities (transparencies or reflectances). Devices for deriving and recording data values in both digital and analog form are disclosed.

A pattern recognition system in which an image plane is divided into a large number of micro-regions, the image of the background has been stored in advance by a unit of the micro-region as invariable information independent of the brightness of the image plane, inputted images and the stored information are successively compared, and the proportion of occupation of the image plane by an object getting in the field of vision is detected.

A two-dimensional input pattern to be recognized is converted into a pattern of n analog voltages representing the peculiar features of said pattern. Next there is established one-to-one correspondence between the two-dimensional input pattern and a point in an N-dimensional Euclidean Space whose coordinates correspond to said n analog voltages. The distances in said Euclidean between the two-dimensional input pattern space and standard patterns in storage for identification of a desired number ...

Coding of a group of characters for recognition by a machine and by a human viewer is provided by coloring each character with a predetermined plurality of colors arranged in predetermined locations within a character configuration. Each character configuration in a set of characters is segregated into a plurality of sectors and each sector is coded by a predetermined one of a plurality of colors which differs from the color coding of an adjacent sector. Apparatus for forming the color-coded cha...

An apparatus for reading on a record medium a two level code representing at least one character of a set of characters, each character having six consecutive transitional occurrences between the two levels of the code comprising: a device for scanning the record medium to derive a time based electrical signal having pulses representative of said transitional occurrences to define at least four periods between alternate ones of said pulses; a measuring circuit for generating a representative sig...