Oversized picture scanner and scanning method thereof

Abstract

The invention relates to an oversized picture scanner and a scanning method thereof. The oversized picture scanner comprises a rack, a scanning element group, a scanning data bracket assembly and a computer mainframe, wherein the scanning element group is arranged on the rack and consists of a plurality of surface type scanning units; the computer mainframe controls the scanning action of the scanning element group and processes scanned pictures and texts. The oversized picture scanner is characterized by also comprising a scanning element group horizontal travel mechanism, the surface type scanning units are fixed on the scanning element group horizontal travel mechanism by being arrayed in a line and positioned above or below the scanning data bracket assembly; and optical lens assemblies of the surface type scanning units face to the scanning data bracket assembly. A traversing carriage drives the scanning element group to scan corresponding scanned data one by one according to a region sequence during scanning, and then the computer mainframe splices the scanned pictures and texts by adopting a multichannel multithreading technology so as to complete the reduction of the scanned data. The invention has large scanning amplitude, high precision, small size and production cost saving.

Description

technical field [0001] The present invention relates to a scanner, in particular to a large-format scanner and a scanning method thereof. Background technique [0002] A scanner is an external computer equipment that captures images of physical data and converts them into digital input devices that can be displayed, edited, stored and output by a computer. Therefore, the scanner is an essential tool for the office automation of the government, enterprises and institutions. Existing scanners are classified into three categories: CCD scanners, CIS scanners and PMT photomultiplier tube scanners. Among them: CCD scanner, also known as photoelectric coupling device scanner, is focused on the photoelectric coupler unit through the reflective lens, and converts the received optical signal into electrical signal. CCD scanners also include line scanners and area scanners. in: [0003] The principle of the line scanner is: when scanning the image screen, the linear photocoupler di...

AI Technical Summary

Problems solved by technology

However, for the scanning of large-format objects, a super-large-area surface sensor is required, but there are still technical difficulties and cannot be produced

In addition, there is also a method of merging and combining multiple surface sensors. Since multiple surface sensors are required to be scanned in a matrix, although the problem of large-scale image restoration can be solved by the surface sensor image stitching technology, it still takes up a large scanning space and production. Disadvantages of high cost

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