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Canon Patent Application: Another IBIS + IS patent application
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Canon Patent Application: Another IBIS + IS patent application

In a similar patent application to the one we discovered last week, this patent application, first found by Northlight details what happens to aberration correction when you use both IBIS (in body image stabilization) + IS (lens image stabilization) at the same time and how to correct for aberrations.

Consider what we learned from the last patent application, where Canon is concerned with what happens when you move the image circle using lens IS and then shift the image sensor using IBIS.  What can also happen when this is the case, is that the level of aberrations also increases the closer to the edge of the image circle that you actually get.  The more aberrations the harder it is to compensate for.  Canon is concerned that the amount of data to accurately correct for the aberrations would be extremely high as in the worst case, you'd have to account for all possible stabilized position combinations of the image sensor and in lens unit.

Interestingly this patent application shows an exploded view of what may be Canon's prototype IBIS unit (figure 2), however, this patent application has nothing to do with the IBIS unit, as it's more to do with the process of processing aberration control.

From the patent itself;

The present disclosure provides an apparatus for image processing including an acquisition unit configured to obtain filter information individually corresponding to two or more types of image stabilization processing used in shooting, a creation unit configured to create a correction filter for use in correcting a captured image by performing predetermined computational processing based on the obtained filter information corresponding to the two or more types of image stabilization processing, and a processing unit configured to perform correction processing using the created correction filter on the captured image captured using the two or more types of image stabilization processing. 

From what we're gleaning from Canon's research into IBIS+IS, there's certainly more than meets the eye for the successful implementation.

US Patent Application 20190182427

 

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How to view Japan Patent applications.

Unfortunately, there's no direct way of linking to the patent application (sad!) however, this is the easiest process to view a japan patent or application.

  1. Go to the Japan Patent Office search page.
  2. If it's a patent application (they are usually in the format of Year-Number ie: 2017-011300) then type the patent application number into the second field down from the top where it says publication of patent application. 
  3. Click on search.
  4. Then click on the patent application number link, and there's the patent application!

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