1. A method for processing forms based on an image, the method comprising: capturing, by a computer, a form in the image; detecting, by the computer, a number of field values within the form in the image; associating, by the computer, each field value in the number of field values that contains private textual data with a field value that identifies the private textual data as secure data; and responsive to the computer associating each field value in the number of field values that contains the private textual data with the field value that identifies the private textual data as secure data, storing, by the computer, only those field values in the number of field values that do not contain the private textual data in image metadata.