MULTI-FOCUS IMAGE FORMATION METHOD AND IMAGE FORMATION DEVICE

• Main Authors: FUKUI TAKAHIRO, MIWATA YASUHIKO, SUZU MASAHARU, OKOCHI TEIICHI
• Format: Patent
• Language: English
• Published: 27.10.1998
• Edition: 6
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; PICTORIAL COMMUNICATION, e.g. TELEVISION

PROBLEM TO BE SOLVED: To provide multi-focus images usable for image analysis by obtaining the plural images in the same photographing range focused at successively different image depth, extracting focused partial images from the respective images and synthesizing the extracted partial images. SOLUTION: By the lens driving part 22 of a camera 12, a focus position is set at the successively different image depth while photographing the images. The deviation of a center position at a set focus position which is the intrinsic property of a lens 16 and the data of affine correction by an image formation position are prepared beforehand. The driving state of the lens driving part 22 and the images recorded in a CCD image pickup part 20 are transferred to a processing main body part 26 in real time, and at the time of matching the plural focus positions set beforehand, the position data and partially focused image data are successively recorded. The processing main body part 26 executes centering correction and the affine correction to the recorded data, performs layer synthesis and obtains the multi-focus images.