METHOD FOR ESTIMATING THE AMOUNT OF AN UNCONSUMED PART OF A CONSUMABLE

摘要

A method of estimating an amount of an unconsumed part of a recording material wrapped on a core of a roll is implemented as an application program for an electronic device having a camera. A storage device stores reference data about the roll and the recording material in an unconsumed state. The method includes taking a picture of the recording material and the core with a camera, deriving from the picture characteristics of a first and second number of pixels representing the core and the unconsumed part of the recording material, respectively, requesting from a user an identification of the roll and the recording material, receiving the identification, matching the identification with the reference data, and calculating the amount of the unconsumed part of the recording material by means of the matched reference data and the characteristics of the first and second numbers of pixels.

主权项

1. A method of estimating an amount of recording material wrapped upon a core of a roll, the method being implemented as an application program for an electronic device having a camera, said method comprising the steps of:
taking a picture of the recording material and the core with the camera; deriving from the picture characteristics of a first number of pixels representing the core; deriving from the picture characteristics of a second number of pixels representing an unconsumed part of the recording material; requesting from a user an identification of the roll and a type of the recording material; receiving from the user the identification of the roll and the type of the recording material; matching the identification with reference data about the core and the roll in an unconsumed state; and calculating the amount of the unconsumed part of the recording material by means of the matched reference data and the characteristics of the first number of pixels and the characteristics of the second number of pixels.