Patents by Inventor Johannes Yzebrand Tichelaar
Johannes Yzebrand Tichelaar has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11887285Abstract: To enable a high quality HDR video communication, which can work by sending corresponding LDR images potentially via established LDR video communication technologies, which works well in practical situations, applicant has invented a HDR video decoder (600, 1100) arranged to calculate a HDR image (Im_RHDR) based on applying to a received 100 nit standard dynamic range image (Im_RLDR) a set of luminance transformation functions, the functions comprising at least a coarse luminance mapping (FC), which is applied by a dynamic range optimizer (603), and a mapping of the darkest value (0) of an intermediate luma (Y?HPS), being output of the dynamic range optimizer, to a received black offset value (Bk_off) by a range stretcher (604), the video decoder comprising a gain limiter (611, 1105) arranged to apply an alternate luminance transformation function to calculate a subset (502) of the darkest luminances of the HDR image, from corresponding darkest lumas (Y?_in) of the standard dynamic range image.Type: GrantFiled: January 30, 2023Date of Patent: January 30, 2024Assignee: Koninklijke Philips N.V.Inventors: Johannes Yzebrand Tichelaar, Johannes Gerardus Rijk Van Mourik, Jeroen Hubert Christoffel Jacobus Stessen, Roeland Focco Everhard Goris, Mark Jozef Willem Mertens, Patrick Luc Els Vandewalle, Rutger Nijland
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Publication number: 20230177659Abstract: To enable a high quality HDR video communication, which can work by sending corresponding LDR images potentially via established LDR video communication technologies, which works well in practical situations, applicant has invented a HDR video decoder (600, 1100) arranged to calculate a HDR image (Im_RHDR) based on applying to a received 100 nit standard dynamic range image (Im_RLDR) a set of luminance transformation functions, the functions comprising at least a coarse luminance mapping (FC), which is applied by a dynamic range optimizer (603), and a mapping of the darkest value (0) of an intermediate luma (Y?HPS), being output of the dynamic range optimizer, to a received black offset value (Bk_off) by a range stretcher (604), the video decoder comprising a gain limiter (611, 1105) arranged to apply an alternate luminance transformation function to calculate a subset (502) of the darkest luminances of the HDR image, from corresponding darkest lumas (Y?_in) of the standard dynamic range image.Type: ApplicationFiled: January 30, 2023Publication date: June 8, 2023Inventors: Johannes Yzebrand TICHELAAR, Johannes Gerardus Rijk VAN MOURIK, Jeroen Hubert Christoffel Jacobus STESSEN, Roeland Focco Everhard GORIS, Mark Jozef Willem MERTENS, Patrick Luc Els VANDEWALLE, Rutger NIJLAND
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Patent number: 11593922Abstract: To enable a high quality HDR video communication, which can work by sending corresponding LDR images potentially via established LDR video communication technologies, which works well in practical situations, applicant has invented a HDR video decoder (600, 1100) arranged to calculate a HDR image (Im_RHDR) based on applying to a received 100 nit standard dynamic range image (Im_RLDR) a set of luminance transformation functions, the functions comprising at least a coarse luminance mapping (FC), which is applied by a dynamic range optimizer (603), and a mapping of the darkest value (0) of an intermediate luma (Y?HPS), being output of the dynamic range optimizer, to a received black offset value (Bk_off) by a range stretcher (604), the video decoder comprising a gain limiter (611, 1105) arranged to apply an alternate luminance transformation function to calculate a subset (502) of the darkest luminances of the HDR image, from corresponding darkest lumas (Y?_in) of the standard dynamic range image.Type: GrantFiled: October 2, 2020Date of Patent: February 28, 2023Assignee: Koninklijke Philips N.V.Inventors: Johannes Yzebrand Tichelaar, Johannes Gerardus Rijk Van Mourik, Jeroen Hubert Christoffel Jacobus Stessen, Roeland Focco Everhard Goris, Mark Jozef Willem Mertens, Patrick Luc Els Vandewalle, Rutger Nijland
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Patent number: 11521537Abstract: To enable better color and in particular color saturation control for HDR image handling systems which need to do luminance dynamic range conversion, e.g.Type: GrantFiled: March 3, 2021Date of Patent: December 6, 2022Assignee: Koninklijke Philips N.V.Inventors: Johannes Yzebrand Tichelaar, Mark Jozef Willem Mertens, Johannes Gerardus Rijk Van Mourik
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Publication number: 20220124293Abstract: To allow a better determination of an image of a different luminance dynamic range (in particular as characterised by a different maximum luminance a.k.a.Type: ApplicationFiled: October 27, 2021Publication date: April 21, 2022Inventor: Johannes Yzebrand TICHELAAR
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Patent number: 11272195Abstract: At least some applications in the total HDR video chain desire some more sophisticated approach, such as a high dynamic range video encoder (900), arranged to receive via an image input (920) an input high dynamic range image (MsterHDR) which has a first maximum pixel luminance (PB_C_H50), the encoder being arranged to receive via a metadata input (921) a master luma mapping function (FL_50t1), which luma mapping function defines the relationship between normalized lumas of the input high dynamic range image and normalized lumas of a corresponding standard dynamic range image (Im_LDR) having a maximum pixel luminance of preferably 100 nit, characterized in that the encoder further comprises a metadata input (923) to receive a second maximum pixel luminance (PB_CH), and the encoder further being characterized in that it comprises: —a HDR function generation unit (901) arranged to apply a standardized algorithm to transform the master luma mapping function (FL_50t1) into a adapted luma mapping function (F_H2hCIType: GrantFiled: August 22, 2019Date of Patent: March 8, 2022Assignee: Koninklijke Philips N.V.Inventors: Renatus Josephus Van Der Vleuten, Rutger Nijland, Johannes Yzebrand Tichelaar
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Publication number: 20210360266Abstract: At least some applications in the total HDR video chain desire some more sophisticated approach, such as a high dynamic range video encoder (900), arranged to receive via an image input (920) an input high dynamic range image (MsterHDR) which has a first maximum pixel luminance (PB_C_H50), the encoder being arranged to receive via a metadata input (921) a master luma mapping function (FL_50t1), which luma mapping function defines the relationship between normalized lumas of the input high dynamic range image and normalized lumas of a corresponding standard dynamic range image (Im_LDR) having a maximum pixel luminance of preferably 100 nit, characterized in that the encoder further comprises a metadata input (923) to receive a second maximum pixel luminance (PB_CH), and the encoder further being characterized in that it comprises: —a HDR function generation unit (901) arranged to apply a standardized algorithm to transform the master luma mapping function (FL_50t1) into a adapted luma mapping function (F_H2hCIType: ApplicationFiled: August 22, 2019Publication date: November 18, 2021Inventors: RENATUS JOSEPHUS VAN DER VLEUTEN, RUTGER NIJLAND, JOHANNES YZEBRAND TICHELAAR
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Patent number: 11170478Abstract: To allow a better determination of an image of a different luminance dynamic range (in particular as characterised by a different maximum luminance a.k.a.Type: GrantFiled: December 6, 2018Date of Patent: November 9, 2021Assignee: Koninklijke Philips N.V.Inventor: Johannes Yzebrand Tichelaar
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Publication number: 20210272497Abstract: To enable better color and in particular color saturation control for HDR image handling systems which need to do luminance dynamic range conversion, e.g.Type: ApplicationFiled: March 3, 2021Publication date: September 2, 2021Inventors: JOHANNES YZEBRAND TICHELAAR, MARK JOZEF WILLEM MERTENS, JOHANNES GERARDUS RIJK VAN MOURIK
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Patent number: 10964248Abstract: To enable better color and in particular color saturation control for HDR image handling systems which need to do luminance dynamic range conversion, e.g.Type: GrantFiled: May 3, 2018Date of Patent: March 30, 2021Assignee: Koninklijke Philips N.V.Inventors: Johannes Yzebrand Tichelaar, Mark Jozef Willem Mertens, Johannes Gerardus Rijk Van Mourik
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Publication number: 20210019868Abstract: To enable a high quality HDR video communication, which can work by sending corresponding LDR images potentially via established LDR video communication technologies, which works well in practical situations, applicant has invented a HDR video decoder (600, 1100) arranged to calculate a HDR image (Im_RHDR) based on applying to a received 100 nit standard dynamic range image (Im_RLDR) a set of luminance transformation functions, the functions comprising at least a coarse luminance mapping (FC), which is applied by a dynamic range optimizer (603), and a mapping of the darkest value (0) of an intermediate luma (Y?HPS), being output of the dynamic range optimizer, to a received black offset value (Bk_off) by a range stretcher (604), the video decoder comprising a gain limiter (611, 1105) arranged to apply an alternate luminance transformation function to calculate a subset (502) of the darkest luminances of the HDR image, from corresponding darkest lumas (Y?_in) of the standard dynamic range image.Type: ApplicationFiled: October 2, 2020Publication date: January 21, 2021Inventors: Johannes Yzebrand TICHELAAR, Johannes Gerardus Rijk VAN MOURIK, Jeroen Hubert Christoffel Jacobus STESSEN, Roeland Focco Everhard GORIS, Mark Jozef Willem MERTENS, Patrick Luc Els VANDEWALLE, Rutger NIJLAND
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Patent number: 10863201Abstract: To enable practical and quick generation of a family of good looking HDR gradings for various displays on which the HDR image may need to be shown, we describe a color transformation apparatus (201) to calculate resultant colors (R2, G2, B2) of pixels of an output image (IM_MDR) for a display with a display peak brightness (PB_D) starting from input colors (R, G, B) of pixels of an input image (Im_in) having a maximum luma code corresponding to a first image peak brightness (PB_IM1) which is different from the display peak brightness, characterized in that the color transformation apparatus comprises: —a color transformation determination unit (102; 2501) arranged to determine a color transformation (TMF; g) as defined in color processing specification data (MET_1) comprising at least one tone mapping function (CC) received via a metadata input (116), which color transformation specifies how the luminances of pixels of the input image are to be converted into luminances for those pixels of a second image (IM_Type: GrantFiled: December 21, 2016Date of Patent: December 8, 2020Assignee: Koninklijke Philips N.V.Inventors: Mark Jozef Willem Mertens, Rutger Nijland, Johannes Gerardus Rijk Van Mourik, Johannes Yzebrand Tichelaar
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Publication number: 20200357100Abstract: To allow a better determination of an image of a different luminance dynamic range (in particular as characterised by a different maximum luminance a.k.a.Type: ApplicationFiled: December 6, 2018Publication date: November 12, 2020Applicant: KONINKLIJKE PHILIPS N.V.Inventor: Johannes Yzebrand TICHELAAR
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Patent number: 10803562Abstract: To enable a high quality HDR video communication, which can work by sending corresponding LDR images potentially via established LDR video communication technologies, which works well in practical situations, applicant has invented a HDR video decoder (600, 1100) arranged to calculate a HDR image (Im_RHDR) based on applying to a received 100 nit standard dynamic range image (Im_RLDR) a set of luminance 5 transformation functions, the functions comprising at least a coarse luminance mapping (FC), which is applied by a dynamic range optimizer (603), and a mapping of the darkest value (0) of an intermediate luma (Y?HPS), being output of the dynamic range optimizer, to a received black offset value (Bk_off) by a range stretcher (604), the video decoder comprising a gain limiter (611, 1105) arranged to apply an alternate luminance transformation function to 10 calculate a subset (502) of the darkest luminances of the HDR image, from corresponding darkest lumas (Y?_in) of the standard dynamic range image.Type: GrantFiled: March 15, 2017Date of Patent: October 13, 2020Assignee: Koninklijke Philips N.V.Inventors: Johannes Yzebrand Tichelaar, Johannes Gerardus Rijk Van Mourik, Jeroen Hubert Christoffel Jacobus Stessen, Roeland Focco Everhard Goris, Mark Jozef Willem Mertens, Patrick Luc Els Vandewalle, Rutger Nijland
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Publication number: 20200193890Abstract: To enable better color and in particular color saturation control for HDR image handling systems which need to do luminance dynamic range conversion, e.g.Type: ApplicationFiled: May 3, 2018Publication date: June 18, 2020Inventors: JOHANNES YZEBRAND TICHELAAR, MARK JOZEF WILLEM MERTENS, JOHANNES GERARDUS RIJK VAN MOURIK
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Publication number: 20190155392Abstract: A user interaction system (1) is provided that comprises an electrical apparatus (10), a beacon (16) that radiates a photon radiation (R16), a portable pointing device (12) operable by a user for pointing to a region in space (20), which portable pointing device includes a camera (122) connected thereto for obtaining images from said space and a digital signal processor (14). The digital signal processor (14) is capable of receiving and processing the images, and of transmitting user interface information, derived by processing the images, to the electrical apparatus.Type: ApplicationFiled: September 30, 2015Publication date: May 23, 2019Inventors: Hendricus Theodorus Gerardus Maria PENNING DE VRIES, Robert Heinz KOLL, Johannes Yzebrand TICHELAAR
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Patent number: 10289213Abstract: The invention is directed at a remote control device for controlling one or more user devices, comprising a directional optical sensor for receiving one or more optical signals from the user devices and for detecting an incoming direction of said received optical signals, and a processor. For identification of at least one of said user devices, the processor is arranged for analyzing at least one of said received optical signals for associating thereof with the at least one of said user devices and for keeping track of the at least one of said optical signals upon changing of said incoming direction. The one or more optical signals comprise high and low signal states, wherein each optical signal consists of one or more signal fragments.Type: GrantFiled: September 28, 2015Date of Patent: May 14, 2019Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Hendricus Theodorus Gerardus Maria Penning De Vries, Henk Kok, Johannes Yzebrand Tichelaar
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Publication number: 20190130542Abstract: To enable a high quality HDR video communication, which can work by sending corresponding LDR images potentially via established LDR video communication technologies, which works well in practical situations, applicant has invented a HDR video decoder (600, 1100) arranged to calculate a HDR image (Im_RHDR) based on applying to a received 100 nit standard dynamic range image (Im_RLDR) a set of luminance 5 transformation functions, the functions comprising at least a coarse luminance mapping (FC), which is applied by a dynamic range optimizer (603), and a mapping of the darkest value (0) of an intermediate luma (Y?HPS), being output of the dynamic range optimizer, to a received black offset value (Bk_off) by a range stretcher (604), the video decoder comprising a gain limiter (611, 1105) arranged to apply an alternate luminance transformation function to 10 calculate a subset (502) of the darkest luminances of the HDR image, from corresponding darkest lumas (Y?_in) of the standard dynamic range image.Type: ApplicationFiled: March 15, 2017Publication date: May 2, 2019Inventors: Johannes Yzebrand TICHELAAR, Johannes Gerardus Rijk VAN MOURIK, Jeroen Hubert Christoffel Jacobus STESSEN, Roeland Focco Everhard GORIS, Mark Jozef Willem MERTENS, Patrick Luc Els VANDEWALLE, Rutger NIJLAND
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Publication number: 20190052908Abstract: To enable practical and quick generation of a family of good looking HDR gradings for various displays on which the HDR image may need to be shown, we describe a color transformation apparatus (201) to calculate resultant colors (R2, G2, B2) of pixels of an output image (IM_MDR) for a display with a display peak brightness (PB_D) starting from input colors (R, G, B) of pixels of an input image (Im_in) having a maximum luma code corresponding to a first image peak brightness (PB_IM1) which is different from the display peak brightness, characterized in that the color transformation apparatus comprises: —a color transformation determination unit (102; 2501) arranged to determine a color transformation (TMF; g) as defined in color processing specification data (MET_1) comprising at least one tone mapping function (CC) received via a metadata input (116), which color transformation specifies how the luminances of pixels of the input image are to be converted into luminances for those pixels of a second image (IM_Type: ApplicationFiled: December 21, 2016Publication date: February 14, 2019Inventors: Mark Jozef Willem MERTENS, Rutger NIJLAND, Johannes Gerardus Rijk VAN MOURIK, Johannes Yzebrand TICHELAAR
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Publication number: 20180217677Abstract: The invention is directed at a remote control device for controlling one or more user devices, comprising a directional optical sensor for receiving one or more optical signals from the user devices and for detecting an incoming direction of said received optical signals, and a processor. For identification of at least one of said user devices, the processor is arranged for analyzing at least one of said received optical signals for associating thereof with the at least one of said user devices and for keeping track of the at least one of said optical signals upon changing of said incoming direction. The one or more optical signals comprise high and low signal states, wherein each optical signal consists of one or more signal fragments.Type: ApplicationFiled: September 28, 2015Publication date: August 2, 2018Inventors: Hendricus Theodorus Gerardus Maria PENNING DE VRIES, Henk KOK, Johannes Yzebrand TICHELAAR