| 摘要 |
The invention relates to a method of locating a code in an image file, comprising forming an image window from a target comprising a readable code, dividing the image window into sub-windows, analysing for each sub-window whether it constitutes a part of the code by comparing the variation density colour of the sub-window with one or more threshold values set for the colour, gathering the sub-windows evaluated as constituting a part of the code into a group of sub-windows, and verifying that the gathered group of sub-windows defines a valid code.
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