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US 10,958,827 B2Granted
Image mark sensing systems and methods
AssigneeE-Image Data Corporation
InventorsTodd Kahle, Grant Taylor
Life of this patent
Estimating the term…
Abstract
Systems and methods use a digital microform imaging apparatus for sensing an image mark on the microform containing the image of a document. The use of an area sensor with an adjustable region of interest can be used to improve the detection speed of image marks as a roll of microform is being transported.
Claims27
A method for sensing an image mark on a microform, the method comprising:
- providing a digital microform imaging apparatus having an area sensor, the area sensor having an array of sensor elements configured to acquire image data;
- transporting the microform along a film path of the digital microform imaging apparatus at a first microform transport rate;
- defining a first region of interest of the area sensor having a first number of sensor elements, the array of sensor elements including the first number of sensor elements;
- defining a second region of interest of the area sensor having a second number of sensor elements, the second number of sensor elements being different than the first number of sensor elements, the array of sensor elements including the second number of sensor elements;
- acquiring first image data using only the first number of sensor elements of the first region of interest, the first image data being of the image mark on the microform;
- determining a dimension of the image mark from the first image data, the dimension of the image mark including at least one of:
- a length of the image mark on the microform;
- a width of the image mark on the microform;
- a distance between multiple image marks on the microform;
- or
- a vertical location of the image mark on the microform;
- adjusting the first region of interest from the first number of sensor elements to another number of sensor elements within the array of sensor elements based on the dimension of the image mark;
- and
- adjusting the first microform transport rate to a second microform transport rate that is different than the first microform transport rate based on the another number of sensor elements.
11 more elements
A method for sensing an image mark on a microform using a digital microform imaging apparatus, the apparatus including an area sensor having an array of sensor elements configured to acquire image data, the method comprising:
- transporting the microform along a film path of the digital microform imaging apparatus at a first microform transport rate;
- sensing the image mark on the microform with the array of sensor elements as the microform is transported along the film path of the digital microform imaging apparatus at the first microform transport rate;
- determining a dimension of the image mark on the microform from the sensing of the image mark with the array of sensor elements;
- adjusting the first microform transport rate to a second microform transport rate that is different than the first microform transport rate, based on the determined image mark dimension;
- and
- sensing an image on the microform with the array of sensor elements.
3 more elements
A method of sensing an image mark on a microform using a digital microform imaging apparatus, the apparatus including an area sensor having an array of sensor elements configured to acquire image data, the method comprising:
- sensing the image mark on the microform with the array of sensor elements;
- detecting a format of the image mark from the sensing of the image mark with the array of sensor elements;
- adjusting a microform transport rate based on the detected image mark format.
A digital microform imaging apparatus, the apparatus comprising:
- an area sensor having an array of sensor elements configured to acquire image data;
- a film guide assembly for retaining a microform on a film path, the film path including an optical path;
- and
- a controller configured to:
- transport the microform along the film path at a first microform transport rate;
- define a first region of interest of the area sensor having a first number of sensor elements, the array of sensor elements including the first number of sensor elements;
- define a second region of interest of the area sensor having a second number of sensor elements, the second number of sensor elements being different than the first number of sensor elements, the array of sensor elements including the second number of sensor elements;
- sense an image mark on the microform using only the first number of sensor elements of the first region of interest;
- determine a dimension of the image mark on the microform based on the sensed image mark with the first number of sensor elements, the dimension of the image mark including at least one of:
- a length of the image mark on the microform;
- a width of the image mark on the microform;
- a distance between multiple image marks on the microform;
- or
- a vertical location of the image mark on the microform;
- and
- adjust the first region of interest from the first number of sensor elements to another number of sensor elements within the array of sensor elements based on the dimension of the image mark;
- and
- adjust the first microform transport rate to a second microform transport rate that is different than the first microform transport rate, based on the another number of sensor elements.
15 more elements
Dependencies are inferred from the claim text.