[미국특허]
Image adjusting system with multiple lens modules and method thereof
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H04N-005/232
G06T-007/00
출원번호
US-0305531
(2014-06-16)
등록번호
US-9113083
(2015-08-18)
우선권정보
TW-103115508 A (2014-04-30)
발명자
/ 주소
Chou, Hong-Long
Chuang, Che-Lun
Tseng, Chia-Chun
출원인 / 주소
ALTEK SEMICONDUCTOR CORPORATION
대리인 / 주소
Bacon & Thomas, PLLC
인용정보
피인용 횟수 :
1인용 특허 :
3
초록▼
The present disclosure illustrates an image adjusting system with multiple lens modules and method thereof. The system is adapted for an image capturing device having a zoom lens module and a prime lens module. When the zoom lens module and the prime lens module captures a first image and a second i
The present disclosure illustrates an image adjusting system with multiple lens modules and method thereof. The system is adapted for an image capturing device having a zoom lens module and a prime lens module. When the zoom lens module and the prime lens module captures a first image and a second image, the image adjusting system can select a first reference calibration parameter table from multiple first calibration parameter tables, and search a current focus parameter from a focus parameter lookup table according to a current motor step, and then multiply the second image, the first reference calibration parameter table and the current focus parameter to generate a third image. Therefore, the third image has substantially consistent with the first image.
대표청구항▼
1. An image adjusting system with multiple lens modules, adapted for an image capture device having a zoom lens module and a prime lens module, and the image adjusting system comprising: a calibration data storage module, configured for storing a plurality of first calibration parameter tables corre
1. An image adjusting system with multiple lens modules, adapted for an image capture device having a zoom lens module and a prime lens module, and the image adjusting system comprising: a calibration data storage module, configured for storing a plurality of first calibration parameter tables corresponding to different focus parameters for the prime lens module, and storing a focus parameter lookup table recording a corresponding relationship between motor steps and the focus parameters;a focus determination module, configured for obtaining a current motor step of the zoom lens module, and searching a current focus parameter corresponding to the current motor step according to the focus parameter lookup table; andan image consistency correction module, wherein when the zoom lens module and the prime lens module capture a first image and a second image respectively, the image consistency correction module selects a first reference calibration parameter table from the plurality of first calibration parameter tables according to the current focus parameter searched by the focus determination module, and multiplies the second image, the first reference calibration parameter table and the current focus parameter to generate a third image which has substantial consistency with the first image. 2. The image adjusting system as defined in claim 1, wherein the first calibration parameter table is formed by an image distortion correction table, a geometry calibration table and a focus conversion table. 3. The image adjusting system as defined in claim 2, wherein the image distortion correction tables are multiple in number, and the plurality of image distortion correction tables correspond to different focus parameters, respectively. 4. The image adjusting system as defined in claim 1, wherein the calibration data storage module further stores a plurality of second calibration parameter tables corresponding to different focus parameters for the zoom lens module, and the image consistency correction module selects a second reference calibration parameter table from the plurality of second calibration parameter tables according to the current focus parameter searched by the focus determination module, and multiplies the first image, the second reference calibration parameter table and the current focus parameter to generate a fourth image which has substantial consistency with the third image. 5. An image adjusting method with multiple lens modules, adapted for an image capture device having a zoom lens module and a prime lens module, and the image adjusting method comprising: executing a calibration process which comprises: placing a calibration model in front of the zoom lens module and the prime lens module, and then moving the calibration model to different position respectively, and controlling the zoom lens module to focus on the calibration model for calibration, and calculating a plurality of focus parameters;obtaining a plurality of motor steps of the zoom lens module during focusing, to establish a focus parameter lookup table which records the corresponding relationship between the plurality of motor steps and the plurality of focus parameters; andcalibrating the prime lens module according to the calibration model at different positions, to calculating a plurality of first calibration parameter tables;executing an image consistency correction process which comprises: using the zoom lens module and the prime lens module to capture a first image and a second image, respectively;obtaining a current motor step of the zoom lens module, and searching a current focus parameter corresponding to the current motor step according to the focus parameter lookup table;selecting a first reference calibration parameter table from the plurality of first calibration parameter tables according to the current focus parameter; andmultiplying the second image, the first reference calibration parameter table and the current focus parameter, to generate a third image which has substantial consistency with the first image. 6. The image adjusting method as defined in claim 5, wherein the first calibration parameter table is formed by an image distortion correction table, a geometry calibration table and a focus conversion table. 7. The image adjusting method as defined in claim 6, wherein the image distortion correction tables are multiple in number, the plurality of image distortion correction tables correspond to different focus parameters, respectively. 8. The image adjusting method as defined in claim 5, wherein when the zoom lens module is larger than the prime lens module in resolution, the calibration process further comprises a step of: cutting a calibration image from the image captured by the zoom lens module according to an image size of the prime lens module, and performing calibration based on the calibration image. 9. The image adjusting method as defined in claim 5, wherein the calibration process further comprises a step of: calibrating the zoom lens module according to the calibration model at different positions, to generate a plurality of second calibration parameter tables. 10. The image adjusting method as defined in claim 9, wherein the image consistency correction process further comprises: selecting a second reference calibration parameter table from the plurality of second calibration parameter tables according to the current focus parameter; andmultiplying the first image, the second reference calibration parameter table and the current focus parameter, to generate a fourth image which has substantial consistency with the third image.
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