An arrangement for photographing a hot surface includes a camera arranged to take a number of successive images of the surface, whereby each image includes a part of the surface to be photographed. A light source is arranged to illuminate the surface to be photographed, whereby the camera and the light source are synchronized in such a way that the light source illuminates the surface at the shooting moment of each image, and an image-processing unit is arranged to combine a complete image of the whole surface to be photographed out of the successive images taken by the camera. A server is arranged to determine a coordinate system for the complete image, to receive data on the surface generated by one or more measuring devices, and to combine the received data with the complete image.
G01N 21/00 - Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
G01N 21/89 - Investigating the presence of flaws, defects or contamination in moving material, e.g. paper, textiles
B21B 38/02 - Methods or devices for measuring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring flatness or profile of strips
G01B 11/30 - Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces
G06T 3/40 - Scaling of whole images or parts thereof, e.g. expanding or contracting
H04N 5/232 - Devices for controlling television cameras, e.g. remote control
G03B 37/04 - Panoramic or wide-screen photographyPhotographing extended surfaces, e.g. for surveyingPhotographing internal surfaces, e.g. of pipe with cameras or projectors providing touching or overlapping fields of view
B21B 38/00 - Methods or devices for measuring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
2.
METHOD AND APPARATUS FOR DETERMINING FEATURES OF HOT SURFACE
The invention relates to an arrangement for photographing a hot surface. A camera (106) is arranged to take a number of successive images of the surface (102) to be photographed, whereby each image comprises a part (108) of the surface to be photographed, the camera (106) and the surface (102) to be photographed being arranged to move relative to each other such that each image comprises a part of the surface part shown in the preceding and the following image. A light source (110) is arranged to illuminate the surface to be photographed, whereby the camera and the light source are synchronized in such a way that the light source illuminates the surface at the shooting moment of each image, and an image- processing unit (114) is arranged to combine a complete image of the whole surface to be photographed out of the successive images taken by the camera. A server (118) is arranged to determine a coordinate system for the complete image, to receive data on the surface to be photographed, generated by one or more measuring devices, and to combine the received data with the complete image.
G03B 37/04 - Panoramic or wide-screen photographyPhotographing extended surfaces, e.g. for surveyingPhotographing internal surfaces, e.g. of pipe with cameras or projectors providing touching or overlapping fields of view
B21B 1/26 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-sectionSequence of operations in milling trainsLayout of rolling-mill plant, e.g. grouping of standsSuccession of passes or of sectional pass alternations for rolling bands or sheets of indefinite length in a continuous process by hot-rolling
B21B 38/00 - Methods or devices for measuring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
patents
