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Canon patent for focus peaking algorithm

focus peaking

Canon patent for a new focus peaking algorithm. If you wonder what focus peaking is, have a look here.

So far Canon featured focus peaking only on the EOS M5 and EOS M3. Hopefully this patent means Canon will feature focus peaking on more cameras in the future.

  • Patent Publication No. 2016-158106
    • Published 2016.9.1
    • Filing date 2015.2.24
  • Canon patent
    • To get the distance information of the object
    • To generate a waveform image showing the degree of focusing of the object based on the high-frequency component
    • To vary the color of the waveform

For those who love “patentish language”:

[Claim(s)] [Claim 1] An imaging part,
A display part which displays an image imaged by the aforementioned imaging part,
An information acquisition section which obtains distance information of an object included in the aforementioned image,
It is an imaging device provided with a waveform drawing generation part which generates waveform images which extract a high frequency component of the aforementioned image, and in which a focus degree of an object is shown based on a high frequency component,
The aforementioned waveform drawing generation part generates waveform images of an imaging range corresponding to an object included in a predetermined range scale using the aforementioned distance information,
An imaging device, wherein the aforementioned display part displays the aforementioned waveform images with the aforementioned image.
[Claim 2] The imaging device according to claim 1 having a set part to which a user is made to set the aforementioned predetermined range scale.
[Claim 3] The imaging device according to claim 1 or 2, wherein the aforementioned waveform drawing generation part changes a wave-like color in the aforementioned waveform images according to distance of an object.
[Claim 4] It has a tracking means to track the aforementioned object,
An imaging device of a description in any 1 item of Claim 1 characterized by the aforementioned waveform drawing generation part generating waveform images of an imaging range corresponding to an object of the aforementioned tracking object even when an object of a tracking object is no longer included in the aforementioned predetermined range scale to 3.
[Claim 5] The aforementioned waveform drawing generation part is adjustable in transmittance of the aforementioned waveform images,
An imaging device of a description in any 1 item of Claim 1, wherein the aforementioned display part displays the aforementioned waveform images on the aforementioned image in piles to 4.
[Claim 6] It is a control method of an imaging device which displays a focus degree of an object with an image under imaging,
Distance information of an object included in the aforementioned image is obtained,
Using the aforementioned distance information, a high frequency component of a region corresponding to an object included among the aforementioned images in a predetermined range scale is extracted, and waveform images in which a focus degree of an object is shown based on a high frequency component are generated,
A control method of an imaging device displaying the aforementioned waveform images with the aforementioned image.

focus peaking

[via Egami]
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