公开(公告)号：EP0870280A1

公开(公告)日：1998-10-14

申请号：EP96921909.0

申请日：1996-06-24

申请人： PURUP-ESKOFOT A/S

发明人： SCHISTAD, Bernhard

IPC分类号： G06T1 ,  G06T7 ,  H04N1

CPC分类号： H04N1/6086 ,  G06T7/90 ,  G06T2207/10024 ,  H04N1/60 ,  H04N1/6077

摘要： The invention relates to a method and an apparatus for the analysis and correction of colour casts in a digitally represented image. According to a preferred embodiment, the crominance contents of the image may be transformed by use of a Hough-transformation or the like transformation, wherein the line structures in the carthesic system of co-ordinates for the crominance content is transformed to a representation in a Hough-diagram in the form of a polar system of co-ordinates, since such line structure is hereby transformed into a point structure. The Hough-diagram is examined with a view to finding a cell in the diagram which has the highest value and the cell found is saved. Subsequently cells are neutralized in the Hough-diagram within a predetermined angular distance, and the Hough-diagram is re-examined with a view to finding that diagram cell which, following neutralization, has the highest value. The cell found is saved and the cells saved which represent the maximae in the Hough-diagram are used to determine the intersecting points for lines in the crominance content system, and said intersecting points are used to evaluate the discolouration of the image.

摘要翻译： PCT号 PCT / DK96 / 00278秒。 371四月日期6，1998秒。 102（e）中的日期1998年4月6日提交的PCT 1996年6月24日的PCT公布。 号 WO97 / 01150 PCT公开 1月9日的日期，1997The发明涉及一种方法以及一种用于分析和颜色校正装置以数字表示的图像投射。 。根据一个优选实施例中，图像的内容crominance可以通过使用霍夫变换等变换的转化，worin线结构坐标的carthesic系统为crominance内容被变换为表示在一个 霍夫图中坐标的极坐标系统的形式，因为搜索线结构在此转化成点结构。 霍夫图检查，以发现具有最高值，发现细胞被保存在图中的单元格。 随后细胞被中和在一个预定的角距离内的霍夫图，霍夫示意图重新检查，以寻找所做图细胞其中，中和后，具有最高值。 发现细胞被保存并代表在霍夫图中maximae保存的细胞被用于确定性矿交点在crominance内容系统线，并且所述交叉点用于评估的图像的变色。

公开(公告)号：EP0572507B1

公开(公告)日：1994-12-28

申请号：EP92906058.0

申请日：1992-02-21

申请人： PURUP-ESKOFOT A/S

发明人： BALLEGAARD, Hans, Peter ,  BERING, Mikael, Fonager ,  HANSEN, Agner

IPC分类号： B41B19/00

CPC分类号： B41B19/00

摘要： An apparatus is described for exposing a film or plate comprising a light-sensitive material to a light beam. The apparatus comprises an apparatus housing having an elongated cavity or drum defining a substantially circularly-cylindrical inner support (100) for supporting the film or plate and defining a central axis, laser means (122, 124, 126) for generating the light beam, a light-directing assembly (102) comprising a laser light-emitter, a rotatable optically reflecting element (170) and an element-rotating motor (178) having a rotatable output shaft connected to the optically reflecting element (170). The laser light-emitter is constituted by the second end of an optical fibre means (122, 124, 126) having a first light-receiving end being arranged in juxtaposition to the laser means for receiving the light beam therefrom. The second light-emitting end is in juxtaposition to the rotatable optically reflecting element (170) at a substantially fixed distance therefrom for emitting the light beam to the rotatable optically reflecting element (170). The rotatable optically reflecting element is arranged so as to direct the light beam to the light-sensitive film or plate, and the light-directing assembly (102) is movable relative thereto along the central axis. The apparatus further comprises motion means for moving the light-directing assembly (102) relative to the apparatus housing along the central axis, and central control means for controlling the laser means (122, 124, 126), the element-rotating motor (178), and the motion means so as to expose a predetermined area of the photographic film.

公开(公告)号：EP1338063A1

公开(公告)日：2003-08-27

申请号：EP01967072.8

申请日：2001-09-05

申请人： PURUP-ESKOFOT A/S

发明人： PETERSEN, Paul, Michael

IPC分类号： H01S5/0683 ,  H01S5/14 ,  H01S3/105 ,  H01S3/08

CPC分类号： H01S5/141 ,  H01S5/0656 ,  H01S5/06821 ,  H01S5/0683 ,  H01S5/148 ,  H01S5/2036

摘要： A diode laser system providing a high-power laser beam with good spatial coherence, which can be focused to a small spot size over long distances and which has a good pointing stability. The laser system comprises a laser diode (301) adapted to emit a first light beam, where the first light beam comprises a plurality of spatial modes, selection means (304) adapted to select a predetermined part of the first light beam, and a reflector (306), where the laser diode and the reflector define a cavity and where the reflector is adapted to reflect the selected part of the first light beam back into the laser diode as a second light beam. The laser system is characterised in that the selection means is adapted to select a part of the first light beam corresponding to a spatial mode with a higher mode number than a spatial mode with maximum gain.

公开(公告)号：EP0976098A1

公开(公告)日：2000-02-02

申请号：EP97921639.7

申请日：1997-05-07

申请人： PURUP-ESKOFOT A/S

发明人： HYLDAHL, Heidi, Marianne ,  BALLEGAARD, Hans, Peter ,  BUUS, Niels

IPC分类号： G06K15/12 ,  G02B26/12 ,  H04N1/191

CPC分类号： H04N1/0621 ,  B41B19/00 ,  B41B21/16 ,  G02B26/10 ,  H04N1/0607 ,  H04N1/0635 ,  H04N1/0671 ,  H04N1/1911 ,  H04N2201/0471 ,  H04N2201/04731 ,  H04N2201/04732 ,  H04N2201/04744

摘要： A method and an apparatus for exposing light-sensitive materials, including a first light beam conducted from a light source with the wavelength lambd1 to a first exposure point on the light-sensitive material via an optical system. This system has at least one input end and one output end as well as at least one reflecting or transmitting rotating optical element arranged relatively to the optical output end, wherein at least one additional light source generates an additional light beam with a wavelength lambdx which is different from lambd1. The additional light beam with the wavelength lambdx is conducted via the input end of the optical system to the output end of the optical system, so as to be geometrically coincident with the first light beam at the output end of the optical system, the additional light beam being conducted from there to an additional exposure point on the light-sensitive material inside the image setter drum in dependence on lambdx or the mutual difference between the wavelength DELTAlambd, said light beams being conducted completely or partly from the input end of the optical system via one or more light guides, preferably optical fibers, to the output end of the optical system.

摘要翻译： 本发明涉及一种在扫描仪中曝光胶片和其他感光材料的方法。 根据本发明，第一光束经由包括至少一个输入端和一个输出端以及至少一个输出端的光学系统从波长为μ1的光源传导至光敏材料上的第一曝光点 光学旋转反射或透射元件，其相对于光学输出端布置，其中至少一个附加光源产生具有不同于μ1的波长μx的附加光束，具有波长μx的所述附加光束经由输入端 从而在光学系统的输出端与光学系统的输出端处的第一光束在几何上一致，所述附加光束从那里传导到光学系统的输出端上的另外的曝光点， 根据μx或在波长Δμ之间的相互差异，在图像传感器鼓内的敏感材料，所述光束被传导c 完全地或部分地从光学系统的输入端经由一个或多个光导（优选光纤）到达光学系统的输出端。