Patent AU-2009251207-A1 (AU)
Title: Auto-focus method sensitive to moving object
Inventor: NAGITA MEHRSERESHT
IPC: G02F1/01
Filed: 2009-12-24
Abstract: AUTO-FOCUS METHOD SENSITIVE TO MOVING OBJECT A method, system and computer program are disclosed for selecting a region in a scene captured by a camera. The method comprises the steps of: capturing first and second images of at least one region in the scene using a sensor comprising first and second portions, each of the first and second portions using a predetermined blur function having a shape substantially invariant to motion in the scene, wherein the predetermined blur function of the ) first portion is a mirror image of the predetermined blur function of the second portion (1601, 1602); estimating a disparity between the first and second images captured by the first and second portions of the sensor, respectively, in the least one region (1607); determining a speed for the at least one region according to the estimated disparity and parameters of the predetermined blur functions (1608) and determining a selection status for the at least one 5 region based on the determined speed. 2459035 I IRN: 930059 120 110 100 ................. ............. .... ... LI) ............. ................... ...... iw S e n s o r ............... ..... ............... ................. ...... ........................ .............. ....................................... ..........I ................... .. .. . . .. . . .. . . ........................................ .. .........* ................... . .. . .. . . .. . . ..........* ............................. .............* ................. . .. . .. . . .. . . .............................................. ............................... .............. ................. ............................ ...................... ........................ ........ .......................... ......................... ........ ....... .. .................. .................... .............. .... ........................... ......................... ...... ..................... .............. ... ..... ........................ .. ................. ...... ..................... ........ ........................... ............................. ................ ............ ....... .... i ---- ................ ....................... . . .. . .. . .. . .. . ................................... ............. ............ .... .. .... S t 'tib ' b r --p d: .................... a n. ..............y .. .. . .. . .. . .. . . .. . . .. . .. . .. .............................................. ................... ........................ .............................................. .... ........................... ..... ....... ........................................... ......................... ...... ..... .................... ................................. ... ...... .............................................. Image accelerated across sensor Fig. 1A ......................... ....... ....................................... S e n s o r ..............................I ............ . . .............. ...... .................. ................... .................... .. . . .. . . . . . . .. . . ............. ......... .... ............................. ............. ........................................... .... .............. .................. ......................... .... ............ ........ .... ............. ..... ............................ ... ......... ................ ...... .................. ......... ......... ........... ....... .......... ........ ......... ........ ... IOEZ ....... ....... ....... ............... ........ ......... ............................ .......................... ... ............ ............... ........................................... ................. ................ . ............... ........................... . .... .......... o vtng . ett ............... ............. . . ...* - * .................. .......................... ................... .......... ............. ......... ........... .......... .............. .............................. .................... 4 ) image accelerated across sensor * Fig. 1 B CVR 06.figs IRN: 930059