公开(公告)号：US12205237B2

公开(公告)日：2025-01-21

申请号：US17722711

申请日：2022-04-18

Applicant: MediaTek Inc.

Inventor： Chih-Wei Chen ,  Pei-Kuei Tsung ,  Yao-Sheng Wang ,  Chun Chen Lin ,  Chia-Ching Lin ,  Hsiao-Chien Chiu

IPC: G06T7/194 ,  G06T3/40 ,  G06T7/571 ,  H04N23/69

Abstract: A device produces a dolly zoom effect with automatic focal length adjustment. The device uses a camera to capture an initial image including at least a foreground object and a background. The device includes a size tracking circuit to identify the size of the foreground object in the initial image. The device further includes a focal length control circuit. The focal length control circuit calculates an adjusted focal length of the camera to maintain the size of the foreground object in subsequently captured images.

公开(公告)号：US20230334619A1

公开(公告)日：2023-10-19

申请号：US17722711

申请日：2022-04-18

Applicant: MediaTek Inc.

Inventor： Chih-Wei Chen ,  Pei-Kuei Tsung ,  Yao-Sheng Wang ,  Chun Chen Lin ,  Chia-Ching Lin ,  Hsiao-Chien Chiu

IPC: G06T3/40 ,  G06T7/194 ,  H04N5/232 ,  G06T7/571

CPC classification number: G06T3/40 ,  G06T7/194 ,  H04N5/23296 ,  G06T7/571

Abstract: A device produces a dolly zoom effect with automatic focal length adjustment. The device uses a camera to capture an initial image including at least a foreground object and a background. The device includes a size tracking circuit to identify the size of the foreground object in the initial image. The device further includes a focal length control circuit. The focal length control circuit calculates an adjusted focal length of the camera to maintain the size of the foreground object in subsequently captured images.

公开(公告)号：US20210334586A1

公开(公告)日：2021-10-28

申请号：US17191296

申请日：2021-03-03

Applicant: MediaTek Inc.

Inventor： Chih-Wei Chen ,  Pei-Kuei Tsung ,  Chia-Da Lee ,  Yao-Sheng Wang ,  Hsiao-Chien Chiu ,  Cheng Lung Jen ,  Yu-Cheng Tseng ,  Kuo-Chiang Lo ,  Yu Chieh Lan

IPC: G06K9/62 ,  G06T5/00 ,  G06F3/0482 ,  G06F3/0484 ,  G06F16/58 ,  G06F16/51 ,  G06N20/00

Abstract: An image processing circuit stores a training database and models in memory. The image processing circuit includes an attribute identification engine to identify an attribute from an input image according to a model stored in the memory. By enhancing the input image based on the identified attribute, a picture quality (PQ) engine in the image processing circuit generates an output image for display. The image processing circuit further includes a data collection module to generate a labeled image based on the input image labeled with the identified attribute, and to add the labeled image to the training database. A training engine in the image processing circuit then re-trains the model using the training database.