Patent ID: 11950743
Assignee: ILLINOIS TOOL WORKS INC.
Field: Measurement (Instruments)
Classification: CPC A  G  Y | IPC A  G

Claim 4:
5. A method for cleaning washware in a box-type dishwasher that has a treatment chamber which can be closed and in which washware can be treated in accordance with a predefined or predefinable treatment program, wherein the method comprises the following method steps:
i) a type of washware to be treated in the treatment chamber is automatically detected;
ii) a predefined or predefinable treatment program for treating the washware is automatically selected depending on the type of washware detected; and
iii) the process parameters associated with the selected treatment program are automatically adjusted,
wherein, in method step i), data in the form of a 2-dimensional image, relating to the washware to be treated is recorded and digitized with the aid of an optical identification system, and patterns are obtained from the data, which patterns serve to classify and/or detect the type of washware to be treated, wherein a reflection of light on the washware to be treated is used as at least one measure for detecting the type of washware to be treated;
wherein the data recorded in method step i) is a 2-dimensional color image, and wherein the color is used as a criterion for classifying and detecting the washware to be treated;
wherein method step i) comprises the following substeps:
a) the 2-dimensional color image is preprocessed, wherein the preprocessing comprises filtering and/or converting the 2-dimensional color image into a grayscale value image, wherein method step i) further comprises the following substep:
b1) detecting whether there are reflections in the recorded 2-dimensional color image by generating a corresponding grayscale value histogram on the basis of the grayscale value image, wherein, when corresponding reflections are detected in method step b1), washware is categorized into a cutlery type of washware or into a pots/pans type of washware depending on a degree of the detected reflection and/or the size of a detected, average reflection surface area.