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    Method for the automatic identification of characters, in particular printed characters
    41.
    发明授权
    Method for the automatic identification of characters, in particular printed characters 失效
    用于自动识别字符，特别是打印字符的方法

    公开(公告)号：US3104368A

    公开(公告)日：1963-09-17

    申请号：US73710258

    申请日：1958-05-22

    申请人： INT STANDARD ELECTRIC CORP

    发明人： KARL STEINBUCH

    IPC分类号： G06K9/18 ,  G06K9/28 ,  G06K9/32 ,  G06K9/46 ,  G06K9/50 ,  G06K9/56 ,  G06K9/60 ,  G06K9/64 ,  G11C19/04

    CPC分类号： G06K9/6203 ,  G06K9/18 ,  G06K9/20 ,  G06K9/28 ,  G06K9/32 ,  G06K9/46 ,  G06K9/4604 ,  G06K9/50 ,  G06K9/56 ,  G06K9/58 ,  G06K9/60 ,  G06K2209/01 ,  G11C19/04

    摘要： 871,163. Automatic character recognition. STANDARD TELEPHONES & CABLES Ltd. Jan. 2, 1959 [Jan. 9, 1958], No. 182/59. Addition to 871,162. Class 106 (1). In apparatus for automatically reading characters where signal patterns representing the characters are stored in a two-dimensional shift register and are displaced to bring the pattern into registration with a predetermined position for identification as described in the parent Specification, the characters are scanned in columns (or lines) and the signals derived are stored in turn in an end column (or the top or bottom line) of the shift register and shifted into the register as succeeding columns (or lines) of the character are scanned. Series of photo-cells.-In the form of Fig. 1 the record 11 is moved past a sensing station where the characters are illuminated by a lamp 13 and their reflected image is dissected by a column of photo-cells 16. Other forms of sensing may be used. The photo-cell outputs are connected through amplifiers O1-O9, Fig. 2, to the left-hand column of storage elements 51-59 of the shifting register 18. When a character comes into the sensing station a signal appears on one or more of the photo-cells and this is passed through Or gate 19 to a generator G1 and via inverter 20 to And gate 21. On receiving this signal the generator G1 produces x (horizontal) shift pulses to allow the photo-cell signals to pass into the first column of storage elements 51-59. Subsequent shift pulses displace these signals to the second, third, fourth and fifth columns in turn and read the photo-cell signals at spaced instants into the first column. By this means the whole character pattern is stored in the shifting register. When the character has passed the sensing station no photo-cell in column 16 produces a signal; there is no output from gate 19 and generator G1 therefore produces no further x shift pulses. Vertical centring.-The absence of output from gate 19 between characters causes inverter 20 to enable gate 21 controlling the generator G2 of y (vertical) shift pulses to adjust the vertical position of the character pattern. The outputs of each element of the five top lines of the register are connected to five Or gates 22-26 each of which must deliver an output when the character is in the uppermost position touching the top line. The gate outputs are connected to an And gate 27 which gives a signal only when all five lines have signals. The character pattern is displaced upwardly until this is so, the y generator G2 being enabled by a signal from gate 21 when a zero from gate 27 causes inverter 28 to produce an output. When the character pattern is positioned with parts in each of the five top lines, the signal from gate 27 stops the generator. Five lines are used for this purpose instead of merely the top line in case a part of a character in the line above is giving a signal in the uppermost line, which, where only the top line was used would produce an indication that the character was in the required uppermost position. Centring on an unwanted character in the line above or below is prevented by a circuit 29 having a counter 30 which counts the number of vertical steps in each centring operation and stores this number in store 33 until the next. Comparator 31 compares each count with the previous one and permits the generator G2 to stop only if the new number differs by less than a predetermined value from the previous one. Single photo-cell.-In the form of Fig. 3, the record 11 is moved past the sensing station as before but is sensed by a beam of light from C.R.T. 34 moving in vertical scans, reflected light being received in a photo-cell 36. A ring counter 38, Fig. 4, is stepped by one of two generators G3, G4 and the stages are connected through resistors W and diodes D to provide the scanning voltage for C.R.T. 34. The counter stages are also connected to step a switch 37 through a corresponding cycle of connections, the photo-cell signals being applied to the switch and distributed to storage elements 10-90 in turn. The occurrence of a " black " signal in any storage element, indicating that a character has arrived in the sensing station, causes Or gate 39 to deliver a signal to And gate 41 the other input of which comes from the " O " stage of counter 38. The signals arriving in serial form from photo-cell 36 corresponding to sample points on a vertical scan through the character are thereby staticized in store 10-90 and at the end of the scan shifted into the first column of the shifting register 18. The output from Or gate 39 also determines which generator G3 or G4 shall be used to step the counter. While no signals are being produced by the photo-cell, i.e. before the character arrives, the high-speed generator G3 is used to give a very rapid scan. As soon as a signal is given the output from gate 39 switches generator G3 off through inverter 40 and switches the slow-speed generator G4 into operation.

    Symbol recognition system
    42.
    发明授权
    Symbol recognition system 失效
    符号识别系统

    公开(公告)号：US2932006A

    公开(公告)日：1960-04-05

    申请号：US52355755

    申请日：1955-07-21

    申请人： LAB FOR ELECTRONICS INC

    发明人： GLAUBERMAN MARVIN H

    IPC分类号： G06K9/60

    CPC分类号： G06K9/60 ,  G06K9/20 ,  G06K9/32 ,  G06K9/50

    摘要： 845,106. Photo-electric character reading apparatus. LABORATORY FOR ELECTRONICS Inc. July 13, 1956 [July 21, 1955], No. 21824/56. Class 40(3). [Also in Group XIX] In a character recognition apparatus, e.g. for reading numbers on a bank cheque and controlling printing, sorting or tabulating devices, the character is scanned photo-electrically in a series of lines as indicated at 1-12 in Fig. 7 and the resulting long and short "black" pulses counted to establish in each line scan: (1) the total number of pulses both long and short, and (2) the number of long pulses (e.g. for scan 3 the totals are respectively 2 and 0, whilst for scan 8 they are 1 and 1). The results of the line scans are then compared according to a programme (see below) and the results inserted in a special shift-register store (see below) which is advanced only at each entry. At the completion of the scan of a character a pattern of activated stages exists throughout the store, the pattern being different for each character, and is interpreted to produce a potential on the appropriate one of a group of terminals. The interpretation is effected by means of a matrix interrogation circuit, Fig. 9 (not shown), in which groups of rectifiers are connected to the various possible pattern of stages in the store and control the terminals via gate stages. According to one programme, an entry is made in the store only when the result of adjacent scans are different, provision being made to enter the first two scans irrespective of identity so as to allow for possible inaccuracies in the first scan which may not wholly coincide with the character. The store is arranged as illustrated in Fig. 6 in a group of five columns, each of seven stages, and entry is made in the various columns as shown in accordance with a code number indicating the results of the two counts. The first digit of the code number indicates to the total number of pulses and the second digit indicates the number of long pulses. The shift control, which is applied only when an entry is made, influences all stages simultaneously so that the pattern as it is built up travels as a whole, down the store. The result of this programme for the number 3 scanned as shown in Fig. 7 is set out scan-by-scan in Fig. 8. The shift control is applied during blank scans 9-12, no entry being made however and the emergence of the code for the first scan at the bottom of a column (column 1 for the example considered) serves to indicate that the stored pattern is ready for interpretation and causes the matrix interrogation circuit to be brought into operation. Fig. 6 shows the store with the pattern for number 3 at the moment of interrogation. The code for the first scan is not used in the interpretation since it may contain inaccuracies and merely serves as explained above to bring about the interrogation. The programme ensures that the second scan is always entered. The process of counting pulses renders the apparatus insensitive to the vertical height and position of the characters, and process according to the programme of making a store entry only when adjacent scans differ renders the apparatus insensitive to character width and speed of travel relative to the scanning station. According to an alternative programme, there must be two identical scans before an entry is made in the store, subsequent adjacent identical scans not causing an entry. In the case of number 3 scanned as in Fig. 7, scan 3 would be entered (because it is the same as 2), not scans 4 and 5 (because they are the same as 3), and scan 7 (because it is the same as 6). This programme results in less store entries and thus reduces the number of stages required, inherently rejects the first (possibly inaccurate) scan, and by virtue of the integrative effect over two scans is stated to render the apparatus insensitive to the effects of dust particles &c. Fig. 5 (not shown) illustrates, in block diagram form only, an apparatus set up to operate according to the first programme described above. The counting is effected by binary counters, two being provided for each count which operate alternately with one retaining the count of the preceding line to permit comparison. The comparison, coding and various switching operations are effected by conventional rectifier-type gating and buffer stages. The shift-register store comprises a chain of binary stages, preferably saturable magnetic-core elements. The scanning station Fig. 3 (not shown), comprises a vertical line of photo-electric cells under which the medium bearing the characters is traversed, the cells being brought into operation cyclically in rapid succession so as to produce the effect of a line scan. The cells respond only to infra-red so as to avoid the effects of ambient lighting.

    SYSTEMS AND METHODS FOR CAPTURING IMAGES USING A MOBILE DEVICE
    47.
    发明申请
    SYSTEMS AND METHODS FOR CAPTURING IMAGES USING A MOBILE DEVICE 审中-公开
    使用移动设备捕获图像的系统和方法

    公开(公告)号：US20160212342A1

    公开(公告)日：2016-07-21

    申请号：US14881491

    申请日：2015-10-13

    申请人： A2iA S.A.

    发明人： Andrey V. Semenov ,  Valery Anisimov ,  Sergey N. Sashov ,  Nikolai D. Gorski

    IPC分类号： H04N5/232 ,  G06T7/00 ,  G06T7/40 ,  G06T7/60 ,  G06T3/20 ,  G06K9/46 ,  G06K9/52

    CPC分类号： H04N5/23245 ,  G06K9/3208 ,  G06K9/4604 ,  G06K9/4652 ,  G06K9/4661 ,  G06K9/52 ,  G06K9/60 ,  G06T3/20 ,  G06T3/403 ,  G06T7/60 ,  H04N5/23222 ,  H04N5/23229 ,  H04N5/23293 ,  H04N5/357

    摘要： The systems and methods of the present disclosure enable a user to use a mobile device to automatically capture a high resolution image of a rectangular object. The methods include capturing a low resolution image of the rectangular object and detecting edges of the rectangular object in the low resolution image, where the edges form a quadrangle, calculating a coordinate of each corner of the quadrangle, calculating an average coordinate of each corner of the quadrangle in a most recent predetermined number of low resolution images, calculating a dispersion of each corner of the quadrangle in the most recent predetermined number of low resolution images from a corresponding coordinate of each calculated average coordinate, determining whether the dispersion of each corner of the quadrangle is less than a predetermined value, capturing a high resolution image of the rectangular object when it is determined that the dispersion of each corner of the quadrangle is less than the predetermined value, and geometrically transforming the quadrangle of the rectangular object in the high resolution image into a rectangle.

    摘要翻译： 本公开的系统和方法使得用户能够使用移动设备来自动捕获矩形对象的高分辨率图像。 该方法包括捕获矩形对象的低分辨率图像并检测低分辨率图像中的矩形对象的边缘，其中边缘形成四边形，计算四边形的每个角的坐标，计算每个角的每个角的平均坐标 在最近预定数量的低分辨率图像中的四边形，从每个计算的平均坐标的对应坐标计算最近预定数量的低分辨率图像中的四边形的每个角的色散，确定每个角度的分散 当确定四边形的每个角的偏差小于预定值时，四边形小于预定值，捕获矩形对象的高分辨率图像，并且将矩形对象的四边形几何变换为高 分辨率图像成矩形。

    COMPRESSIVE SENSING WITH LOCAL GEOMETRIC FEATURES
    48.
    发明申请
    COMPRESSIVE SENSING WITH LOCAL GEOMETRIC FEATURES 有权
    压缩感应与本地几何特征

    公开(公告)号：US20160203382A1

    公开(公告)日：2016-07-14

    申请号：US14695709

    申请日：2015-04-24

    申请人： THE CHARLES STARK DRAPER LABORATORY, INC. ,  MASSACHUSETTS INSTITUTE OF TECHNOLOGY

    发明人： Brian Gardiner ,  Rishi Gupta ,  Yaron Rachlin ,  Christopher C. Yu ,  Piotr Indyk ,  Eric Price

    IPC分类号： G06K9/46 ,  G06T9/00 ,  H04N19/90 ,  G06K9/60

    CPC分类号： G06K9/46 ,  G06K9/4633 ,  G06K9/52 ,  G06K9/60 ,  G06K9/6201 ,  G06T9/00 ,  H03M7/3062 ,  H04N19/90

    摘要： Methods and apparatuses for compressive sensing that enable efficient recovery of features in an input signal based on acquiring a few measurements corresponding to the input signal. One method of compressive sensing includes folding an image to generate first and second folds, and recovering a feature of the image based on the first and second folds without reconstructing the image. One example of a compressive sensing apparatus includes a lens, a focal plane array coupled to the lens and configured to generate first and second folds based on the image, and a decoder configured to receive the first and second folds and to recover a feature of the image without reconstructing the image. The feature may be a local geometric feature or a corner. Compressive sensing methods and apparatuses for determining translation and rotation between two images are also disclosed.

    摘要翻译： 用于压缩感测的方法和装置，其能够基于获取对应于输入信号的几个测量值来有效地恢复输入信号中的特征。 压缩感测的一种方法包括折叠图像以产生第一和第二折叠，以及基于第一和第二折叠来恢复图像的特征而不重建图像。 压缩感测装置的一个示例包括透镜，耦合到透镜并被配置为基于图像生成第一和第二折叠的焦平面阵列，以及被配置为接收第一和第二折叠并且恢复第一和第二折叠的特征的解码器 图像而不重建图像。 该特征可以是局部几何特征或角部。 还公开了用于确定两个图像之间的平移和旋转的压缩感测方法和装置。

    SYSTEM AND METHOD FOR IRIS DATA ACQUISITION FOR BIOMETRIC IDENTIFICATION
    49.
    发明申请
    SYSTEM AND METHOD FOR IRIS DATA ACQUISITION FOR BIOMETRIC IDENTIFICATION 有权

    公开(公告)号：US20160148051A1

    公开(公告)日：2016-05-26

    申请号：US14946956

    申请日：2015-11-20

    申请人： EyeLock LLC

    发明人： Keith J. Hanna

    IPC分类号： G06K9/00 ,  G06K9/20

    CPC分类号： G06K9/00604 ,  A61B3/14 ,  G06K9/0061 ,  G06K9/2054 ,  G06K9/209 ,  G06K9/60

    摘要： A system and related method for acquiring high quality images of the iris of an unconstrained subject comprising a camera; a controllable focusing component; a focus controller component that controls the lens to focus at successively different points within a focus range, such focus control performed without any input from measurement of whether the image is in focus or out of focus, be it based from measurements of the image or other distance metrics to the subject; and a sharpness detection component that rejects the most out-of-focus images based on measurement of focus on the image is disclosed.