Film scanning method
AssigneeQISDA (SUZHOU) CO., Ltd.
InventorsXian-Qiang Guo, Chien-Hsing Tang
Life of this patent
Estimating the term…
Abstract
A film scanning method is provided. When the film is judged as a negative film, the scanning device sets the scan exposure time for the film according to the base background color of the film. The negative film is scanned for the scan exposure time, wherein, the film passes through the scanning device at one time so as to complete the above judge of the film type and scanning of the film. The film scanning method automatically completes the recognition of film type, performs accurate scanning based on the scan exposure time, expands the dynamic range and reduces noise impacts, so as to obtain a scanned image with higher accuracy.
Claims10
A film scanning method, comprising:
- setting a scan exposure time for a film by a scanning device according to a base background color of the film if the film is judged as a negative film by the scanning device;
- and
- scanning the negative film during the scan exposure time;
- wherein the film passes through the scanning device at one time so that the scanning device judges and scans the film;
- individual RGB averages of a base of the film is set as the base background color of the film;
- and
- a subsequent scan exposure time is set by the scanning device according to a judgment on a type of the film and the individual RGB averages of the base of the film under a current exposure condition so as to calculate the individual RGB averages of the base of the film for subsequent scanning and set the individual RGB averages of the base of the film for subsequent scanning as a boundary marking threshold for automatic marking.
A film scanning method, comprising:
- after a film entering into a scanning device, reading image data of a base of the film by the scanning device to obtain individual RGB averages of the base of the film, wherein the individual RGB averages of the base of the film is set as a base background color of the film;
- judging a type of the film as one of a positive film, a black/white negative film and a color negative film by the scanning device according to the individual RGB averages of the base of the film;
- setting a subsequent scan exposure time by the scanning device according to a judgment on the type of the film and the individual RGB averages of the base of the film under a current exposure condition so as to calculate the individual RGB averages of the base of the film for subsequent scanning and set the individual RGB averages of the base of the film for subsequent scanning as a boundary marking threshold for automatic marking;
- and
- scanning the film by the scanning device under the above conditions to obtain scanned data of the film.
Dependencies are inferred from the claim text.