Patents by Inventor Abhijith Punnappurath

Abhijith Punnappurath 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).

  • Publication number: 20240071041
    Abstract: A method for processing image data, including obtaining a raw input image that is captured using a first image sensor under an input illumination condition; obtaining, using a transform estimator, a color transform that maps a characteristic of the first image sensor to a characteristic of a second image sensor, based on the input illumination condition; and generating a raw output image having the characteristic of the second image sensor based on the raw input image and the color transform.
    Type: Application
    Filed: July 28, 2023
    Publication date: February 29, 2024
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Abdelrahman Abdelhamed, Michael S. Brown, Abhijith Punnappurath, Hoang Minh Le, Luxi Zhao
  • Publication number: 20240029460
    Abstract: An electronic device may be provided to identify fake pixels from an image that is processed via an image processor that uses artificial intelligence (AI) technology and/or an AI camera module to perform image authentication. The electronic device may be configured to: obtain an input image; obtain a processed image of the input image via AI-based model; generate authentication metadata that indicates fake pixels that have been generated by the AI-based model; store the authentication metadata in association with the processed image in the at least one memory; and output the processed image with an indication of the fake pixels.
    Type: Application
    Filed: May 4, 2023
    Publication date: January 25, 2024
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Michael Scott Brown, Abhijith Punnappurath, Abdelrahman Abdelhamed, Luxi Zhao
  • Publication number: 20240029308
    Abstract: A method for processing image data may include: obtaining a raw input image that is captured under an input illumination; obtaining a target illumination from a user input; obtaining an intermediate image having colors captured under a reference illumination, from the raw input image, based on a first color transform that maps the input illumination to the reference illumination in an illumination dataset of raw sensor images that are captured under a plurality of different illuminations; and obtaining an output image having colors captured under the target illumination, from the intermediate image, based on a second color transform that maps the reference illumination in the illumination dataset to the target illumination.
    Type: Application
    Filed: February 15, 2023
    Publication date: January 25, 2024
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Abdelrahman ABDELHAMED, Michael Scott BROWN, Abhijith PUNNAPPURATH, Luxi ZHAO
  • Publication number: 20230188690
    Abstract: A method for processing image data may include: obtaining a first image and a second image that capture a same scene in different views, from a first camera and a second camera, respectively; spatially aligning the first image with the second image; obtaining a color transformation matrix that maps the first image to the second image based on color values of the first image and the second image; obtaining an estimated illuminant color from an output of a neural network by inputting the color transformation matrix to the neural network, wherein the neural network is trained based on a pair of reference images of a same reference scene with a color rendition chart that are captured by different cameras having different spectral sensitivities; and performing a white balance correction on the first image based on the estimated illuminant color to output a corrected first image.
    Type: Application
    Filed: February 3, 2023
    Publication date: June 15, 2023
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Abdelrahman ABDELHAMED, Abhijith Punnappurath, Michael Scott Brown
  • Publication number: 20230156342
    Abstract: A method of generating a low-light image is provided. The method includes receiving a raw image, removing an amount of first illumination from the raw image, applying a low exposure condition to the raw image having the amount of first illumination removed, and applying an amount of low-light illumination to the raw image having the applied low exposure condition.
    Type: Application
    Filed: December 30, 2021
    Publication date: May 18, 2023
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Abdullah ABUOLAIM, Abhijith PUNNAPPURATH, Abdelrahman ABDELHAMED, Michael Scott BROWN, Aleksai LEVINSHTEIN
  • Patent number: 11451703
    Abstract: An apparatus for customizing camera parameters is provided. The apparatus includes: an image signal processor; and a processor configured to execute instructions to: generate a first edited image based on a first original image, the first original image including first original image data and first metadata indicating a first pattern of processed RGB colors; identify a first mapping function by analyzing the first pattern with respect to a fixed pattern of unprocessed-RGB color space samples; generate first unprocessed image data based on the first mapping function and the first original image; identify image signal processor adjustment parameters based on the first unprocessed image data and the first edited image; and image signal processor parameters of the image signal processor based on the image signal processor adjustment parameters.
    Type: Grant
    Filed: November 10, 2020
    Date of Patent: September 20, 2022
    Assignee: SAMSUNG ELECTRONICS CO.. LTD.
    Inventors: Michael Scott Brown, Abhijith Punnappurath
  • Patent number: 11416972
    Abstract: A system and method for reflection removal of an image from a dual-pixel sensor. The image including a left view and a right view. The method including: determining a first gradient of the left view and a second gradient of the right view; determining disparity between the first gradient and the second gradient using a sum of squared differences (SSD); determining a confidence value at each pixel using the SSD; determining a weighted gradient map using the confidence values; minimizing a cost function to estimate the background layer, the cost function including the weighted gradient map, wherein the image includes the background layer added to a reflection layer; and outputting at least one of the background layer and the reflection layer.
    Type: Grant
    Filed: May 26, 2020
    Date of Patent: August 16, 2022
    Inventors: Abhijith Punnappurath, Michael Brown
  • Publication number: 20220215505
    Abstract: A system and method of processing of a captured image to facilitate post-processing modification. The method includes: receiving the captured image; down-sampling the captured image to generate a down-sampled image; passing the captured image through an image processing pipeline to generate an initial output image, the image processing pipeline including performing one or more image processing operations on the passed image based on a set of parameters; iteratively passing, in one or more iterations, the down-sampled image through the image processing pipeline to generate an output down-sampled image in each iteration, each iteration using at least one variation to the set of parameters used by the image processing pipeline. Down-sampling can be used to generate a down-sampled initial output image such that a mapping is determined between the down-sampled initial output image and the respective output down-sampled image. The down-sampled images or the mapping can be stored as metadata.
    Type: Application
    Filed: April 9, 2020
    Publication date: July 7, 2022
    Inventors: Michael BROWN, Mahmoud AFIFI, Abdelrahman ABDELHAMED, Hakki KARAIMER, Abdullah ABUOLAIM, Abhijith PUNNAPPURATH
  • Publication number: 20220156899
    Abstract: A method for processing image data may include: obtaining a first image and a second image that capture a same scene in different views, from a first camera and a second camera, respectively; spatially aligning the first image with the second image; obtaining a color transformation matrix that maps the first image to the second image based on color values of the first image and the second image; obtaining an estimated illuminant color from an output of a neural network by inputting the color transformation matrix to the neural network, wherein the neural network is trained based on a pair of reference images of a same reference scene and a color rendition chart that are captured by different cameras having different spectral sensitivities; and performing a white balance correction on the first image based on the estimated illuminant color to output a corrected first image.
    Type: Application
    Filed: July 16, 2021
    Publication date: May 19, 2022
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Abdelrahman Abdelhamed, Abhijith Punnappurath, Michael Scott BROWN
  • Publication number: 20220148137
    Abstract: A system and method for reflection removal of an image from a dual-pixel sensor. The image including a left view and a right view. The method including: determining a first gradient of the left view and a second gradient of the right view; determining disparity between the first gradient and the second gradient using a sum of squared differences (SSD); determining a confidence value at each pixel using the SSD; determining a weighted gradient map using the confidence values; minimizing a cost function to estimate the background layer, the cost function including the weighted gradient map, wherein the image includes the background layer added to a reflection layer; and outputting at least one of the background layer and the reflection layer.
    Type: Application
    Filed: May 26, 2020
    Publication date: May 12, 2022
    Inventors: Abhijith PUNNAPPURATH, Michael BROWN
  • Publication number: 20210297582
    Abstract: An apparatus for customizing camera parameters is provided. The apparatus includes: an image signal processor; and a processor configured to execute instructions to: generate a first edited image based on a first original image, the first original image including first original image data and first metadata indicating a first pattern of processed RGB colors; identify a first mapping function by analyzing the first pattern with respect to a fixed pattern of unprocessed-RGB color space samples; generate first unprocessed image data based on the first mapping function and the first original image; identify image signal processor adjustment parameters based on the first unprocessed image data and the first edited image; and image signal processor parameters of the image signal processor based on the image signal processor adjustment parameters.
    Type: Application
    Filed: November 10, 2020
    Publication date: September 23, 2021
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Michael Scott BROWN, Abhijith Punnappurath