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

Claim 6:
7. 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 recorded 2-dimensional color image is preprocessed; and
b) edge detection takes place on the preprocessed image for the purpose of object detection,
wherein the preprocessing in method substep a) comprises filtering;
wherein, when no object is detected in method substep b), method step i) further comprises the following substep:
c) adopting an HOG (“histogram of oriented gradient”) method and determining HOG feature vectors for categorizing washware into a glass type of washware if corresponding HOG feature vectors can be determined.