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EP0629964A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Method of synthesizing optical images

Assignee: Texas Instruments Inc
•
Filing: 1994-01-27
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Granted: —
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Expires: 2014-01-27
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Abstract

Abstract A method and apparatus for forming a synthesized optical image with all of the desired objects in focus. A prescribed number of optical images of the same scene are provided by recording an optical image at a respective focal distance and changing the focal distance for each additional optical image as recorded. The optical images are subjected to wavelet transformation to form a multi-resolution representation. The coefficients of the various multi-resolution representations are compared at the same position to detect the maximum spectral amplitudes. Based on the detected maximum spectral amplitudes, another multi-resolution representation is obtained. Then, an inverse wavelet transformation is performed to obtain the synthesized optical image.

Inventors

  • 👤 Hirohisa Japan Texas Instr. Co. Ltd. Yamaguchi

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-27 14:29
CPC Classifications
G; G06; G06T; G06T5/00; G06T5/73; G06T5/10; G06T5/50; G06T2207/00; G06T2207/10; G06T2207/10141; G06T2207/10148; G06T2207/20; G06T2207/20016; G06T2207/20048; G06T2207/20064

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 95 words
A method for synthesizing optical images comprising of the following steps: performing wavelet transformations from various image element signals of multiple optical images added at different focal distances to obtain multi-resolution representations with a number corresponding to the number of the aforementioned optical images.; comparing the various coefficients of the aforementioned multi-resolution representations corresponding to the aforementioned optical images at the same position so as to detect the maximum spectral amplitude at each of the prescribed positions; and forming the image element signals from the aforementioned synthesized multi-resolution representation by means of inverse wavelet transformation.
Claim 2
Dependent Claim 45 words
Imaging apparatus for forming a synthesized image from all objects in a field of view; memory means for storing the focused images; and image synthesizing means for synthesizing an image of the or each object in the field of view from the stored focused images.
Claim 3
Dependent Claim 15 words
The Apparatus of claim 2, wherein the image synthesizing means comprise one or more filters.
Claim 4
Dependent Claim 18 words
The Apparatus of claim 3, wherein the filters form a hierarcical filter bank comprising low-pass and high-pass filters.
Claim 5
Independent Claim 25 words
The apparatus of any claims 2 to 4, wherein the image capturing means comprise a single device and image capture of each object occurs sequentially.
Claim 6
Dependent Claim 23 words
The Apparatus of claim 5, wherein the image capturing means captures the image from the closest object first and the farthest object last.
Claim 7
Independent Claim 32 words
The Apparatus of any of claims 2 to 4, wherein the image capturing means plurality of devices each adapted to capture the image of a different object in the field of view.
Claim 8
Independent Claim 29 words
The Apparatus of any of claims 2 to 7, wherein the memory means comprise a frame memory for storing the image formed from the or each image capturing means.
Claim 9
Dependent Claim 9 words
Apparatus for carrying out the method of claim 1.

References Cited (Backward Citations)

WO1985004036A1 Cited
US5124842A Cited

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