February 21, 2018, 08:41:07 AM

Author Topic: Patent: Improving Computational Photography With DPRAW  (Read 678 times)

Canon Rumors

  • Administrator
  • Canon EF 600mm f/4L IS II
  • *****
  • Posts: 6327
    • Canon Rumors
Patent: Improving Computational Photography With DPRAW
« on: February 11, 2018, 04:38:32 PM »
We posted yesterday about a utility that looks to improve the dynamic range in the EOS 5D Mark IV, but using the two DPRAW exposures to blend a single exposure. One of the issues that arises when doing this is getting parallax errors.

Canon News has uncovered a very detailed patent that shows Canon is thinking along the same lines.

It seems that Canon has the same ideas, as they are investigating correcting the parallax error in post processing.

This would only be necessary if they are looking to improve the dynamic range response or combining two halves of the image computationally.  This by nature of how the halves of the pixels are summed together happens naturally for normal images, but does not for dual pixel RAW file formats, where Canon outputs the one half of the pixel, and the full pixel output.  Different things can be done to the image such as adjust the bokeh and AF fine point adjustment and now it looks like Canon is trying to do other things with the data.

The patent is quite detailed and goes a bit above our pay grade.

canonrumors.com

canon rumors FORUM

Patent: Improving Computational Photography With DPRAW
« on: February 11, 2018, 04:38:32 PM »

Mt Spokane Photography

  • CR GEEK
  • ************
  • Posts: 14008
Re: Patent: Improving Computational Photography With DPRAW
« Reply #1 on: February 11, 2018, 05:06:13 PM »
The patent is quite detailed and goes a bit above our pay grade.</p><span id="pty_trigger"></span>[/q]


As noted in the patent

"[UU13J  Further  features and aspects of the present  invention will become apparent from the following description of exemplary embodiment's with reference  to  the  attached drawings."

That reminds me of the common comments made in my Engineering classes many years ago.  They went something like "It will be self evident to the reader"


Bahrd

  • PowerShot G7 X Mark II
  • **
  • Posts: 11
Re: Patent: Improving Computational Photography With DPRAW
« Reply #2 on: February 12, 2018, 02:51:39 AM »
The patent is quite detailed and goes a bit above our pay grade.</p><span id="pty_trigger"></span>[/q]


As noted in the patent

"[UU13J  Further  features and aspects of the present  invention will become apparent from the following description of exemplary embodiment's with reference  to  the  attached drawings."

That reminds me of the common comments made in my Engineering classes many years ago.  They went something like "It will be self evident to the reader"

This notorious quote: "Il est facile de voir que..." ("It is therefore obvious that...") is attributed to Laplace.
Anyway, I have noticed that there is a Quad-Pixel architecture in the patent.

canon rumors FORUM

Re: Patent: Improving Computational Photography With DPRAW
« Reply #2 on: February 12, 2018, 02:51:39 AM »