Samsung Electronics Co., Ltd.

Jong Seong Choi

Dong Woo Lee

Il Do Kim

Min Kyu Park

Sung Dae Cho

Dong-bum Choi

Moon Gi Kang

Hyun Hee Park

Na-ri Im

Kyu Yul Choi

Suk Hwan Lim

Young Seok Han

An image signal processor includes a statistic data generating unit for receiving an image signal from an external device, an image processing unit for receiving the image signal, and a direct memory access (DMA) module connected to the statistic data generating unit and the image processing unit. The statistic data generating unit performs first image pre-processing on the image signal and generates first statistic data based on the image signal subjected to the first image pre-processing. The DMA module stores the first statistic data therein and provides the stored first statistic data to the image processing unit. The image processing unit performs second image pre-processing on the image signal and performs image processing on the image signal based on the first statistic data.

Statistic generating circuit for image processing

A dynamic range enhancement method and apparatus for an imaging device expands a dynamic range of an input image without an associated increase in the amount of image calculations. The dynamic range enhancement method includes producing brightness information and color information from an input image; applying gamma correction and inverse gamma correction to the brightness information to produce a gamma corrected image and an inverse gamma corrected image; comparing variances of the gamma corrected image and the inverse gamma corrected image at identical spots; and expanding a dynamic range of the input image by selecting one of the variances at each spot. The dynamic range of an input image is expanded by applying a post imaging process without increasing calculation amount of the imaging device.

Dynamic range enhancement method and apparatus

Growing community of inventors

HWASEONG-SI, South Korea

Jong Seong Choi