Method and apparatus for detecting and processing image information

• US 4,659,213 A
• Filed: 03/27/1986
• Issued: 04/21/1987
• Est. Priority Date: 04/08/1985
• Status: Expired due to Term

• Current Assignee: Fuji Photo Film Co Limited (Fujifilm Holdings Corporation)
• Original Assignee: Fuji Photo Film Co Limited (Fujifilm Holdings Corporation)
• Inventors: Matsumoto, Fumio
• Primary Examiner(s): WINTERCORN, RICHARD
• Application Number:
  US06/845,121
• Time in Patent Office: 390 Days
• Field of Search: 355/38, 355/39, 355/40, 355/41, 355/68, 355/77, 250/571, 250/559
• US Class Current: 355/38
• CPC Class Codes: G03B 27/462 in enlargers, e.g. roll film printers
• CPC Class Codes: G03B 27/73 Controlling exposure by variation of spectral composition, e.g. multicolor printers

Abstract

A method and apparatus for detecting and processing image information for detecting and reading out information which has been recorded on the marginal portions of a film negative sheet which are outside the image frames thereof. The marginal information is either printed or recorded on another recording medium together with the image information contained within the frames. The marginal information may be used during photographic printing so as to discriminate the front surface from the back surface thereof and/or to discriminate the top surface of the film from the bottom surface of the film.

Claims

1. A method for detecting photographic image information which comprises the steps of:

receiving light from an original film and projecting the light upon an image sensor;

detecting image information corresponding to all areas of the original film as pixel units obtained by segmenting a frame of the film; and

detecting marginal information which has been recorded outside of the frame of the original film.

2. A method for detecting photographic image information as claimed in claim 1, wherein the original film is a film negative of a short length.

3. A method for detecting photographic image information as claimed in claim 1, wherein the marginal information includes at least one of bar codes, side prints, side belts, film carrier color, notches or marks.

4. A method for detecting photographic image information as claimed in claim 1, wherein the image sensor is a two-dimensional image sensor.

5. A method for detecting photographic image information as claimed in claim 1, wherein the image sensor is a one-dimensional line sensor and either the original film or the one-dimensional line sensor is moved relation to the other for detection.

6. A device for detecting photographic image information comprising:

a light system which illuminates the entire area of one frame of a mounted original film;

an image sensor for receiving and detecting the light passing through said original film, and a control system for controlling said image sensor wherein frame image information recorded on said original film and marginal information recorded outside of said frame are detected by said image sensor.

7. A device for detecting photographic image information as claimed in claim 6, wherein said image sensor comprises a two-dimensional image sensor.

8. A device for detecting photographic image information as claimed in claim 6, wherein said image sensor comprises a one-dimensional line sensor which is adapted to move with respect to said original film.

9. A device for detecting photographic image information, as claimed in claim 6, wherein said two-dimensional image sensor is inclined from an optical axis of said light system.

10. A method for processing detected image data which comprises the steps of:

receiving light from an original film and projecting the light upon a line sensor;

detecting image information which has been recorded outside of a frame of said original film in pixel units;

detecting marginal information on said frame which has been recorded outside of said frame of said original film; and

discriminating at least one of a front surface of the original film from a back surface thereof or a top surface from a bottom surface thereof in accordance with the marginal information.

11. A method for processing detected image data as claimed in claim 10, wherein said marginal information comprise start marks and end marks of bar codes.

12. A method for detecting and processing image information which comprises the steps of:

receiving light from an original film and projecting the light upon an image sensor;

detecting image information from the original film in pixel units obtained by segmenting a frame of the film;

detecting marginal information on the frame which has been recorded outside of the frame of the original film; and

discriminating at least one of a front surface of the original film from a back surface thereof or a top surface from a bottom surface thereof in accordance with the marginal information.

13. A method for detecting and processing image information as claimed in claim 12, wherein the marginal information are one of either the start marks and end marks of bar codes or frame numbers of side prints.