TW493341B - An auto-focusing algorithm using discrete wavelet transform - Google Patents
An auto-focusing algorithm using discrete wavelet transform Download PDFInfo
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- TW493341B TW493341B TW088118214A TW88118214A TW493341B TW 493341 B TW493341 B TW 493341B TW 088118214 A TW088118214 A TW 088118214A TW 88118214 A TW88118214 A TW 88118214A TW 493341 B TW493341 B TW 493341B
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- Taiwan
- Prior art keywords
- focus position
- sharpness
- sub
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- parameter
- Prior art date
Links
- 238000000034 method Methods 0.000 claims abstract description 24
- 238000003384 imaging method Methods 0.000 claims abstract description 23
- 238000004364 calculation method Methods 0.000 claims description 12
- 230000007246 mechanism Effects 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 230000009466 transformation Effects 0.000 claims description 4
- 238000012935 Averaging Methods 0.000 claims 3
- 238000004458 analytical method Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000012545 processing Methods 0.000 description 7
- 230000002079 cooperative effect Effects 0.000 description 6
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- 238000011156 evaluation Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 208000035475 disorder Diseases 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
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- 241001327708 Coriaria sarmentosa Species 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
- H04N19/63—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using sub-band based transform, e.g. wavelets
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/67—Focus control based on electronic image sensor signals
- H04N23/675—Focus control based on electronic image sensor signals comprising setting of focusing regions
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Automatic Focus Adjustment (AREA)
- Studio Devices (AREA)
- Focusing (AREA)
- Image Input (AREA)
- Image Analysis (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/211,309 US6151415A (en) | 1998-12-14 | 1998-12-14 | Auto-focusing algorithm using discrete wavelet transform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| TW493341B true TW493341B (en) | 2002-07-01 |
Family
ID=22786377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW088118214A TW493341B (en) | 1998-12-14 | 1999-10-21 | An auto-focusing algorithm using discrete wavelet transform |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US6151415A (enExample) |
| JP (1) | JP2002532761A (enExample) |
| KR (1) | KR100426934B1 (enExample) |
| AU (1) | AU1617300A (enExample) |
| DE (1) | DE19983806B4 (enExample) |
| GB (1) | GB2358978B (enExample) |
| TW (1) | TW493341B (enExample) |
| WO (1) | WO2000036551A1 (enExample) |
Families Citing this family (54)
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| US7095164B1 (en) | 1999-05-25 | 2006-08-22 | Intel Corporation | Display screen |
| US6697534B1 (en) | 1999-06-09 | 2004-02-24 | Intel Corporation | Method and apparatus for adaptively sharpening local image content of an image |
| US6373481B1 (en) * | 1999-08-25 | 2002-04-16 | Intel Corporation | Method and apparatus for automatic focusing in an image capture system using symmetric FIR filters |
| US6625308B1 (en) | 1999-09-10 | 2003-09-23 | Intel Corporation | Fuzzy distinction based thresholding technique for image segmentation |
| US6658399B1 (en) | 1999-09-10 | 2003-12-02 | Intel Corporation | Fuzzy based thresholding technique for image segmentation |
| US7053944B1 (en) | 1999-10-01 | 2006-05-30 | Intel Corporation | Method of using hue to interpolate color pixel signals |
| US7106910B2 (en) * | 1999-10-01 | 2006-09-12 | Intel Corporation | Color video coding scheme |
| US7158178B1 (en) | 1999-12-14 | 2007-01-02 | Intel Corporation | Method of converting a sub-sampled color image |
| US6628827B1 (en) | 1999-12-14 | 2003-09-30 | Intel Corporation | Method of upscaling a color image |
| EP1111444B1 (fr) * | 1999-12-21 | 2005-10-05 | Koninklijke Philips Electronics N.V. | Appareil photographique comportant un dispositif de focalisation automatique |
| US6766062B1 (en) * | 2000-02-16 | 2004-07-20 | The Board Of Trustees Of The Leland Stanford Junior University - Office Of Technology | Digital ridgelet transform via digital polar coordinate transform |
| US6748118B1 (en) | 2000-02-18 | 2004-06-08 | Intel Corporation | Method of quantizing signal samples of an image during same |
| US6961472B1 (en) | 2000-02-18 | 2005-11-01 | Intel Corporation | Method of inverse quantized signal samples of an image during image decompression |
| US6738520B1 (en) | 2000-06-19 | 2004-05-18 | Intel Corporation | Method of compressing an image |
| US7046728B1 (en) | 2000-06-30 | 2006-05-16 | Intel Corporation | Method of video coding the movement of a human face from a sequence of images |
| US6775413B1 (en) | 2000-09-18 | 2004-08-10 | Intel Corporation | Techniques to implement one-dimensional compression |
| US6788824B1 (en) * | 2000-09-29 | 2004-09-07 | Adobe Systems Incorporated | Creating image-sharpening profiles |
| US6636167B1 (en) | 2000-10-31 | 2003-10-21 | Intel Corporation | Method of generating Huffman code length information |
| US6563439B1 (en) | 2000-10-31 | 2003-05-13 | Intel Corporation | Method of performing Huffman decoding |
| US20020118746A1 (en) * | 2001-01-03 | 2002-08-29 | Kim Hyun Mun | Method of performing video encoding rate control using motion estimation |
| US6766286B2 (en) | 2001-03-28 | 2004-07-20 | Intel Corporation | Pyramid filter |
| US6889237B2 (en) * | 2001-03-30 | 2005-05-03 | Intel Corporation | Two-dimensional pyramid filter architecture |
| US20020184276A1 (en) * | 2001-03-30 | 2002-12-05 | Tinku Acharya | Two-dimensional pyramid filter architecture |
| US20030118245A1 (en) * | 2001-12-21 | 2003-06-26 | Leonid Yaroslavsky | Automatic focusing of an imaging system |
| US6624688B2 (en) | 2002-01-07 | 2003-09-23 | Intel Corporation | Filtering variable offset amplifer |
| US7538815B1 (en) | 2002-01-23 | 2009-05-26 | Marena Systems Corporation | Autofocus system and method using focus measure gradient |
| US6650184B2 (en) | 2002-03-15 | 2003-11-18 | Intel Corporation | High gain amplifier circuits and their applications |
| US20040042551A1 (en) * | 2002-09-04 | 2004-03-04 | Tinku Acharya | Motion estimation |
| US7266151B2 (en) * | 2002-09-04 | 2007-09-04 | Intel Corporation | Method and system for performing motion estimation using logarithmic search |
| US20040057626A1 (en) * | 2002-09-23 | 2004-03-25 | Tinku Acharya | Motion estimation using a context adaptive search |
| US6876776B2 (en) * | 2003-02-14 | 2005-04-05 | Ikonicys, Inc. | System and method for auto-focusing an image |
| US7274393B2 (en) * | 2003-02-28 | 2007-09-25 | Intel Corporation | Four-color mosaic pattern for depth and image capture |
| US20040169748A1 (en) * | 2003-02-28 | 2004-09-02 | Tinku Acharya | Sub-sampled infrared sensor for use in a digital image capture device |
| US20040174446A1 (en) * | 2003-02-28 | 2004-09-09 | Tinku Acharya | Four-color mosaic pattern for depth and image capture |
| US7589781B2 (en) * | 2005-01-26 | 2009-09-15 | Omnivision Technologies, Inc. | Automatic focus for image sensors |
| US7676103B2 (en) * | 2005-06-20 | 2010-03-09 | Intel Corporation | Enhancing video sharpness and contrast by luminance and chrominance transient improvement |
| US20070014468A1 (en) * | 2005-07-12 | 2007-01-18 | Gines David L | System and method for confidence measures for mult-resolution auto-focused tomosynthesis |
| JP4636979B2 (ja) * | 2005-09-09 | 2011-02-23 | キヤノン株式会社 | 撮像装置及びその制御方法 |
| US20080025630A1 (en) * | 2006-07-28 | 2008-01-31 | Atmel Corporation | Adaptive noise filtering for reducing imager noise in digital image applications |
| KR101488655B1 (ko) * | 2007-09-14 | 2015-02-03 | 삼성전자 주식회사 | 자동 초점 조절 장치 및 방법 |
| RU2389050C1 (ru) * | 2008-10-30 | 2010-05-10 | Общество с ограниченной ответственностью Научно-Производственная компания "СенсорИС" | Способ автоматической фокусировки |
| WO2011005238A1 (en) | 2009-07-08 | 2011-01-13 | Freescale Semiconductor, Inc. | Degree-of-focus determination module, position-of-best-focus selection modules, image processing module, imaging system, and corresponding method |
| DE102009035587B3 (de) * | 2009-07-31 | 2011-03-24 | Siemens Aktiengesellschaft | Verfahren zur Filterung eines Chromatogramms |
| US8294811B2 (en) * | 2009-08-04 | 2012-10-23 | Aptina Imaging Corporation | Auto-focusing techniques based on statistical blur estimation and associated systems and methods |
| FR2949003B1 (fr) * | 2009-08-10 | 2017-09-08 | Dxo Labs | Systeme et procede de capture d'images avec deux modes de fonctionnement |
| US8666194B2 (en) | 2009-08-28 | 2014-03-04 | Adobe Systems Incorporated | System and method for editing frequency content of images |
| SG185345A1 (en) * | 2010-05-26 | 2012-12-28 | Hiok Nam Tay | Auto-focus image system |
| KR101157791B1 (ko) * | 2010-06-10 | 2012-06-19 | 주식회사 휴비츠 | 자동 포커싱 시스템을 구비한 광학 현미경 |
| US9398205B2 (en) * | 2010-09-01 | 2016-07-19 | Apple Inc. | Auto-focus control using image statistics data with coarse and fine auto-focus scores |
| CN102445812B (zh) * | 2010-10-13 | 2013-10-16 | 致茂电子(苏州)有限公司 | 高速自动对焦方法 |
| JP4988057B1 (ja) * | 2011-10-11 | 2012-08-01 | アキュートロジック株式会社 | 全焦点画像生成方法、全焦点画像生成装置、全焦点画像生成プログラム、被写体高さ情報取得方法、被写体高さ情報取得装置及び被写体高さ情報取得プログラム |
| JP6467257B2 (ja) * | 2015-03-17 | 2019-02-06 | キヤノン株式会社 | 情報処理装置、情報処理方法及びプログラム |
| TWI782280B (zh) * | 2020-06-01 | 2022-11-01 | 財團法人國家實驗研究院 | 應用於遙測衛星的自動對焦方法及該遙測衛星 |
| US11363209B1 (en) * | 2021-02-24 | 2022-06-14 | Qualcomm Incorporated | Systems and methods for camera zoom |
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| US4973908A (en) * | 1989-06-23 | 1990-11-27 | General Electric Company | NMR probe with multiple isolated coplanar surface coils |
| US5200828A (en) * | 1990-03-19 | 1993-04-06 | Sam Jung Co., Ltd. | Autofocusing device for use in a video camera and an autofocusing method thereof |
| JP3125257B2 (ja) * | 1991-05-14 | 2001-01-15 | コニカ株式会社 | 撮像装置の自動焦点装置 |
| JPH0630319A (ja) * | 1992-06-02 | 1994-02-04 | Sony Corp | オートフォーカス装置 |
| JPH06138383A (ja) * | 1992-10-27 | 1994-05-20 | Ibiden Co Ltd | 自動焦点カメラ |
| KR0179067B1 (ko) * | 1994-02-25 | 1999-05-01 | 구자홍 | 비디오 포커싱 방식에서의 자동 포커싱장치 및 방법 |
| JPH0915506A (ja) * | 1995-04-28 | 1997-01-17 | Hitachi Ltd | 画像処理方法および装置 |
| JP3296687B2 (ja) * | 1995-05-24 | 2002-07-02 | 三洋電機株式会社 | オートフォーカスビデオカメラ |
| JP3907729B2 (ja) * | 1996-02-05 | 2007-04-18 | オリンパス株式会社 | 静止画像撮像装置 |
| JPH1074192A (ja) * | 1996-08-30 | 1998-03-17 | Mitsubishi Electric Corp | 画像処理方法およびその装置 |
| US5885841A (en) * | 1996-09-11 | 1999-03-23 | Eli Lilly And Company | System and methods for qualitatively and quantitatively comparing complex admixtures using single ion chromatograms derived from spectroscopic analysis of such admixtures |
| US6211515B1 (en) * | 1998-10-19 | 2001-04-03 | Raytheon Company | Adaptive non-uniformity compensation using feedforward shunting and wavelet filter |
-
1998
- 1998-12-14 US US09/211,309 patent/US6151415A/en not_active Expired - Lifetime
-
1999
- 1999-10-21 TW TW088118214A patent/TW493341B/zh not_active IP Right Cessation
- 1999-11-10 DE DE19983806T patent/DE19983806B4/de not_active Expired - Fee Related
- 1999-11-10 JP JP2000588722A patent/JP2002532761A/ja active Pending
- 1999-11-10 KR KR10-2001-7007363A patent/KR100426934B1/ko not_active Expired - Fee Related
- 1999-11-10 AU AU16173/00A patent/AU1617300A/en not_active Abandoned
- 1999-11-10 GB GB0113364A patent/GB2358978B/en not_active Expired - Fee Related
- 1999-11-10 WO PCT/US1999/026664 patent/WO2000036551A1/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| KR100426934B1 (ko) | 2004-04-13 |
| DE19983806B4 (de) | 2004-04-01 |
| WO2000036551A1 (en) | 2000-06-22 |
| DE19983806T1 (de) | 2002-01-10 |
| GB0113364D0 (en) | 2001-07-25 |
| KR20010093824A (ko) | 2001-10-29 |
| GB2358978A (en) | 2001-08-08 |
| AU1617300A (en) | 2000-07-03 |
| US6151415A (en) | 2000-11-21 |
| JP2002532761A (ja) | 2002-10-02 |
| GB2358978B (en) | 2003-07-02 |
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| GD4A | Issue of patent certificate for granted invention patent | ||
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