Articles with zoned apertured materials and registration methods

A method of registering a first web and an apertured region of a second web, the method comprising:

• moving a continuous first web in a machine direction;
• moving a continuous second web in the machine direction in proximity to the first web, the second web comprising a plurality of apertures forming a plurality of discrete apertured regions spaced apart from each other in the machine direction;
• capturing, with a registration system comprising an image capture device coupled to a registration processing device, a first image comprising a portion of the second web;
• filtering, with the registration processing device, the captured first image to determine one or more apertured regions of the captured first image;
• modifying, with the registration processing device, the filtered captured first image by applying a dilation morphological operation to the filtered captured first image;
• determining, with the registration processing device and based at least in part on the modified filtered captured first image, a feature of interest related to the determined one or more apertured regions;
• determining, with the registration processing device, a first difference value comprising a difference in location between the feature of interest and a reference feature of the captured first image or the modified filtered captured first image;
• adjusting, based at least in part on the determined first difference value, a relative position of a discrete apertured region of first web with respect to the second web;
• and
• combining the first web and the second web,
• wherein the image capture device comprises an optical system including an image sensor.

A method of registering a first web and an apertured region of a second web, the method comprising:

• moving a continuous first web in a machine direction;
• moving a continuous second web in the machine direction in proximity to the first web, the second web comprising a plurality of apertures forming a plurality of discrete apertured regions spaced apart from each other in the machine direction;
• capturing, with a registration system comprising a first image capture device coupled to a registration processing device, a first image comprising a portion of the second web;
• determining, with the registration processing device, a first difference value comprising a difference in location between a first feature of interest and a first reference feature of the captured first image;
• adjusting, based at least in part on registration parameters including the determined first difference value and a first difference value threshold, a relative position of a discrete apertured region of the second web with respect to the first web;
• combining the first web and the second web;
• capturing, with the registration system by a second image capture device coupled to the registration processing device, a second image comprising a portion of the combined first web and second web;
• determining, with the registration processing device, a second difference value comprising a difference in location between a second feature of interest and a second reference feature of the captured second image;
• and
• adjusting, with the registration processing device and based at least on the determined second difference value, at least one of the registration parameters,
• wherein each of the first image capture device and the second image capture device comprises an optical system including an image sensor.