US 12,406,345 B2
Apparatus and method for dynamic range transforming of images
Charles Leonardus Cornelius Maria Knibbeler, Eindhoven (NL); Renatus Josephus Van Der Vleuten, Veldhoven (NL); and Wiebe De Haan, Eindhoven (NL)
Assigned to Koninklijke Philips N.V., Eindhoven (NL)
Filed by KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
Filed on Nov. 4, 2024, as Appl. No. 18/935,931.
Application 18/935,931 is a continuation of application No. 16/271,459, filed on Feb. 8, 2019, granted, now 12,229,928.
Application 16/271,459 is a continuation of application No. 14/346,765, granted, now 11,640,656, previously published as PCT/IB2012/054984, filed on Sep. 20, 2012.
Claims priority of provisional application 61/588,731, filed on Jan. 20, 2012.
Claims priority of application No. 11182922 (EP), filed on Sep. 27, 2011; and application No. 12160557 (EP), filed on Mar. 21, 2012.
Prior Publication US 2025/0061555 A1, Feb. 20, 2025
This patent is subject to a terminal disclaimer.
Int. Cl. G06T 5/92 (2024.01); G06T 5/50 (2006.01); G06T 11/00 (2006.01); G09G 3/20 (2006.01); G09G 5/00 (2006.01); G09G 5/10 (2006.01); G11B 20/10 (2006.01); G11B 27/10 (2006.01); G11B 27/32 (2006.01); H04N 7/00 (2011.01); H04N 9/68 (2023.01)
CPC G06T 5/92 (2024.01) [G06T 5/50 (2013.01); G06T 11/001 (2013.01); G09G 3/2003 (2013.01); G09G 5/006 (2013.01); G09G 5/10 (2013.01); G11B 20/10 (2013.01); G11B 27/105 (2013.01); G11B 27/329 (2013.01); H04N 7/00 (2013.01); H04N 9/68 (2013.01); G06T 2207/20208 (2013.01); G09G 2320/0271 (2013.01); G09G 2320/0606 (2013.01); G09G 2320/0613 (2013.01); G09G 2320/066 (2013.01); G09G 2340/06 (2013.01); G09G 2360/144 (2013.01); G09G 2370/047 (2013.01)] 22 Claims
OG exemplary drawing
 
1. An image processing apparatus comprising:
a receiver circuit,
wherein the receiver circuit is arranged to receive an image signal,
wherein the image signal comprises at least an encoded image, a dynamic range transform control data and a target display reference,
wherein the target display reference specifies a dynamic range of a target display,
wherein the target display is a display for which the encoded image is optimized,
wherein the target display reference comprises a white point luminance of the target display,
wherein the dynamic range transform control data comprises different dynamic range transform parameters for different maximum luminance levels of the target display;
a dynamic range processor circuit,
wherein the dynamic range processor is arranged to generate an output image by applying a dynamic range transform to the encoded image,
wherein the dynamic range transform is based on the white point luminance, a reference white point luminance and the dynamic range transform control data; and
an output circuit, wherein in the output circuit is arranged to output the output image.