| CTB/McGraw-Hill LLC Patent applications |
| Patent application number | Title | Published |
|---|
| 20090110270 | Use of Composite Bitmapped Images in Conjunction with Display of Captured Data - In order to efficiently present data extracted from a captured image of an assessment document, a single bitmapped composite image is constructed from multiple images or components such that each layer or content type is stored within discrete bits within each pixel. Different layers are then shown, hidden, emphasized, or otherwise manipulated within a display process through the use of palette color manipulation. Applications to other than assessment documents are discussed. | 04-30-2009 |
| 20080316552 | METHOD AND APPARATUS FOR DATA CAPTURE FROM IMAGED DOCUMENTS - Methods and apparatus are disclosed for locating an area of interest within a digital image of a form captured by an imaging scanner. Specific examples include methods and apparatus for optical mark reading with a digital imaging scanner. In many of the methods, an image of a response form is captured by a scanner, and “target” areas for possible responses are located within the image based upon an expected location being adjusted as necessary for certain error-inducing defects in the forms or scanning process. Also disclosed are steps to normalize the darkness values of pixels captured from an optically scanned form. | 12-25-2008 |
| 20080227075 | METHOD AND SYSTEM FOR REDUNDANT DATA CAPTURE FROM SCANNED DOCUMENTS - Embodiments of the invention may be used to capture student markings on assessment documents. Embodiments of the invention may be used for selected response questions or constructed response questions. Embodiments of the invention may be particularly suited to process exceptional marks. | 09-18-2008 |
