公开(公告)号：US20240406363A1

公开(公告)日：2024-12-05

申请号：US18699333

申请日：2022-10-12

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Christiaan Varekamp

IPC: H04N13/156 ,  H04N13/00 ,  H04N13/111 ,  H04N13/271 ,  H04N23/68

Abstract: A method for processing multi-view data of a scene. The method comprises obtaining at least two images of the scene from different cameras, determining a sharpness indication for each image and determining a confidence score for each image based on the sharpness indications. The confidence score is for use in the determination of weights when blending the images to synthesize a new virtual image.

公开(公告)号：US12029500B2

公开(公告)日：2024-07-09

申请号：US17053789

申请日：2019-05-05

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Pieter Jan Van Der Zaag ,  Christiaan Varekamp ,  Bernardus Hendrikus Wilhelmus Hendriks ,  John Pedersen

IPC: A61B34/20 ,  A61B34/30 ,  A61B90/00

CPC classification number: A61B34/20 ,  A61B34/30 ,  A61B90/37 ,  A61B2034/2051 ,  A61B2090/374 ,  A61B2090/3762 ,  A61B2090/378

Abstract: The invention refers to a system (100) for affecting a subject and a method for operating the system comprising a medical device like a biopsy gun (130) set in a first state in which it is not able to affect the subject based on a trigger signal or in a second state in which it is able to affect the subject based on the trigger signal, wherein the state is set based on a provided location of the medical device, i.e., for instance, is set based on the distance of the medical device to a target region. The location of the medical device is provided by a location providing unit (140) comprising, for instance, an imaging unit like an ultrasound system (142). Thus, unintended, possible dangerous injuries of the patient are prevented and the safety of the patient during the interventional procedure is increased.

公开(公告)号：US11792453B2

公开(公告)日：2023-10-17

申请号：US17642965

申请日：2020-09-18

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Bart Kroon ,  Christiaan Varekamp

IPC: H04N21/2365 ,  H04N19/597 ,  H04N21/2343 ,  H04N21/81

CPC classification number: H04N21/2365 ,  H04N19/597 ,  H04N21/234345 ,  H04N21/816

Abstract: Methods of encoding and decoding immersive video are provided. In an encoding method, source video data comprising a plurality of source views is encoded into a video bitstream. At least one of the source views is down-sampled prior to encoding. A metadata bitstream associated with the video stream comprises metadata describing a configuration of the down-sampling, to assist a decoder to decode the video bitstream. It is believed that the use of down-sampled views may help to reduce coding artifacts, compared with a patch-based encoding approach. Also provided are an encoder and a decoder for immersive video, and an immersive video bitstream.

公开(公告)号：US20230162398A1

公开(公告)日：2023-05-25

申请号：US17921998

申请日：2021-04-23

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Christiaan Varekamp ,  Bart Kroon

IPC: G06T7/80

CPC classification number: G06T7/85 ,  G06T2207/10021 ,  G06T2207/30228

Abstract: A method for calibrating at least one of the six-degrees-of-freedom of all or part of cameras in a formation positioned for scene capturing, the method comprising a step of initial calibration before the scene capturing. The step comprises creating a reference video frame which comprises a reference image of a stationary reference object. During scene capturing the method further comprises a step of further calibration wherein the position of the reference image of the stationary reference object within a captured scene video frame is compared to the position of the reference image of the stationary reference object within the reference video frame, and a step adapting the at least one of the six-degrees-of-freedom of a multiple cameras of the formation if needed in order to get an improved scene capturing after the further calibration.

公开(公告)号：US11601659B2

公开(公告)日：2023-03-07

申请号：US17545049

申请日：2021-12-08

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Wilhelmus Hendrikus Alfonsus BruLs ,  Christiaan Varekamp ,  Reinier Bernardus Maria Klein Gunnewiek

IPC: H04N7/18 ,  H04N19/21 ,  H04N19/597 ,  H04N19/46 ,  H04N13/161 ,  G06T9/20

Abstract: A method of encoding a video data signal (15) is provided, together with a method for decoding. The encoding comprises providing color information (51) for pixels in an image, providing a depth map with depth information (52) for the pixels, providing transition information (56, 57, 60, 70, 71) being representative of a width (63, 73) of a transition region (61, 72) in the image, the transition region (61, 72) comprising a depth transition (62) and blended pixels in which colors of a foreground object and a background object are blended, and generating (24) the video data signal (15) comprising encoded data representing the color information (51), the depth map (52) and the transition information (56, 57, 60, 70, 71). The decoding comprises using the transition information (56, 57, 60, 70, 71) for determining the width (63, 73) of the transition regions (61, 72) and for determining alpha values (53) for pixels inside the transition regions (61, 72). The determined alpha values (53) are used for determining the color of a blended pixel at the transition of a foreground object and a background object.

公开(公告)号：US20230035959A1

公开(公告)日：2023-02-02

申请号：US17786584

申请日：2020-12-16

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Willem Verkruijsse ,  Christiaan Varekamp

IPC: A61B5/00 ,  A61B5/11 ,  A61B5/1455

Abstract: The present invention relates to a device (100) for determining a vital sign of a subject by use of PPG. The device comprises a processing unit (110) configured to obtain multiple first detection signals derived from electromagnetic radiation (90) from multiple measurement spots (30) on a skin region (12) of the subject illuminated by one or more illumination spots (20), wherein the electromagnetic radiation (90) enters the skin region (12) at the one or more illumination spots (20) and exits the skin region (12) at the multiple measurement spots (30). The processing unit (110) further obtains 3D image information (130) of the skin region (12) which allows determining the actual spot distance (15) between the measurements spots (30) and an illumination spot (20), respectively. This information can be used to interpret the PPG signal more precisely as without having the 3D image information only a projected distance can be determined if the skin surface is tilted. Additionally, this allows averaging PPG signals derived from a homogenous skin area to improve PPG signal strength and reduce noise. A system (500) comprising such a device and a corresponding method are further described.

公开(公告)号：US11438608B2

公开(公告)日：2022-09-06

申请号：US16128821

申请日：2018-09-12

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Wilhelmus Hendrikus Alfonsus Bruls ,  Christiaan Varekamp ,  Reinier Bernardus Maria Klein Gunnewiek

IPC: H04N19/597 ,  H04N13/161 ,  H04N19/21 ,  H04N19/46

Abstract: A method of encoding a video data signal (15) is provided, together with a method for decoding. The encoding comprises providing color information (51) for pixels in an image, providing a depth map with depth information (52) for the pixels, providing transition information (56, 57, 60, 70, 71) being representative of a width (63, 73) of a transition region (61, 72) in the image, the transition region (61, 72) comprising a depth transition (62) and blended pixels in which colors of a foreground object and a background object are blended, and generating (24) the video data signal (15) comprising encoded data representing the color information (51), the depth map (52) and the transition information (56, 57, 60, 70, 71). The decoding comprises using the transition information (56, 57, 60, 70, 71) for determining the width (63, 73) of the transition regions (61, 72) and for determining alpha values (53) for pixels inside the transition regions (61, 72). The determined alpha values (53) are used for determining the color of a blended pixel at the transition of a foreground object and a background object.

公开(公告)号：US11232567B2

公开(公告)日：2022-01-25

申请号：US16306251

申请日：2017-05-24

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Christiaan Varekamp

IPC: G06K9/00 ,  G06T7/00 ,  G06T7/11

Abstract: As the capabilities of digital histopathology machines grows, there is an increasing need to ease the burden on pathology professionals of finding interesting structures in such images. Digital histopathology images can be at least several Gigabytes in size, and they may contain millions of cell structures of interest. Automated algorithms for finding structures in such images have been proposed, such as the Active Contour Model (ACM). The ACM algorithm can have difficulty detecting regions in images having variable colour or texture distributions. Such regions are often found in images containing cell nuclei, because nuclei do not always have a homogeneous appearance. The present application describes a technique to identify inhomogeneous structures, for example, cell nuclei, in digital histopathology information. It is proposed to search pre-computed super-pixel information using a morphological variable, such as a shape-compactness metric, to identify candidate objects.

公开(公告)号：US11218687B2

公开(公告)日：2022-01-04

申请号：US16637297

申请日：2018-08-07

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Christiaan Varekamp ,  Bart Kroon

IPC: G01B11/00 ,  H04N13/246 ,  G01S17/89 ,  G06T7/80 ,  G06T7/73 ,  H04N13/156 ,  H04N13/271 ,  H04N13/243 ,  H04N13/111 ,  G06T17/00 ,  H04N13/00

Abstract: An apparatus comprises a receiver (401) receiving a first image and associated first depth data captured by a first depth-sensing camera. A detector (405) detects an image position property for a fiducial marker in the first image, the fiducial marker representing a placement of a second depth sensing image camera. A placement processor (407) determines a relative placement vector indicative of a placement of the second depth sensing image camera relative to the first depth-sensing camera in response to the image position property and depth data of the first depth data for an image position of the fiducial marker. A second receiver (403) receives a second image and second first depth data captured by the second depth sensing image camera. A generator (409) generates the representation of at least part the scene in response to a combination of at least the first image and the second image based on the relative placement vector.

公开(公告)号：US11050991B2

公开(公告)日：2021-06-29

申请号：US16334042

申请日：2017-09-28

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Christiaan Varekamp ,  Patrick Luc Els Vandewalle

IPC: H04N13/117 ,  H04N13/128 ,  H04N13/156 ,  H04N13/122 ,  G06T3/40 ,  H04N13/194 ,  H04N21/6587 ,  H04N21/2187 ,  H04N13/282 ,  H04N21/2343 ,  H04N21/4402 ,  H04N21/4728 ,  H04N13/161 ,  H04N21/218 ,  H04N13/167 ,  H04N13/189 ,  H04N19/597

Abstract: An apparatus comprises a store (201) storing images corresponding to different positions and viewing directions for a scene, and associated position parameter vectors for the images where the vector for an image comprises data indicative of a viewing position and a viewing direction. A receiver (205) receives a viewing position parameter vector from a remote client (101). A selector (207) selects a set of images in response to a comparison of the viewing position parameter vector and the associated position parameter vectors. An image synthesizer (209) generates an image from the set of images. A data generator (215) generates a reference position parameter vector for the synthesized image indicating a viewing position and direction for the synthesized image. An image encoder (211) encodes the synthesized image and an output generator (213) generates an output image signal comprising the encoded synthesized image and the reference position parameter vector. The output image signal is transmitted to the remote client.