Samsung Electronics Co., Ltd.

Deoksoo Park

Sanghoon Lee

Byoung-Ju Song

Seungwan Kim

Yongkwon Cho

Byoungju Song

Sangjo Lee

Hongki Kwon

Unki Park

Sungchul Yoon

Joohyuk Yum

Miaofeng Wang

Junghyun Lim

Maeum Lee

SangHoon Ha

Ho Joon Chung

An image processing device is provided. The device includes: a processor configured to: perform first tone mapping on an input image frame using a brightness enhancement tone curve corresponding to a current ambient illuminance value to obtain a first result; obtain histogram tone curves by applying a variable contrast limit to a plurality of histograms respectively corresponding to a plurality of sub-images, constituting a previous image frame; perform second tone mapping on the input image frame by interpolating the histogram tone curves to obtain a second result; and provide output image data by performing third tone mapping on the input image frame based on the first result and the second result. The brightness enhancement tone curve corresponds to a first human vision system (HVS) response to a reference ambient illuminance value and a second HVS response to a target ambient illuminance value.

Image processing device and image processing method thereof

An image processing method includes transforming input image data into a histogram, equalizing the histogram using a cumulative distribution function, setting a first weight value based on the equalized histogram and a first reference value, generating a first tone curve based on the equalized histogram and the first weight value, generating a final output tone curve by applying a second weight value to the first tone curve and an output of a second tone curve applied to the input image data, and generating output image data based on the final output tone curve and the input image data.

Image processing apparatus, image processing method and computer-readable storage medium for direct memory accesses

An image processing device is provided. The image processing device includes: an image quality enhancement circuit configured to generate second image data indicating a plurality of pixel values corresponding to a quadrangular shape by performing image quality enhancement processing on first image data; a map decoder configured to read a map, which includes a plurality of pixel adjustment values for adjusting brightness of a first region of the second image data corresponding to a curved edge of a display panel, from a memory and provide alpha values indicated by the map; a processing circuit configured to generate third image data by adjusting the brightness of the first region by applying the alpha values to the second image data; and a transmission circuit configured to output the third image data to a display driving integrated circuit.

Image processing device, operating method thereof, and display system including image processing device

A display system includes: a host processor configured to compensate at least one set of frame data based on at least one set of panel map data including a plurality of offset values corresponding to a plurality of pixels of a display panel, generate at least one set of compensated frame data, and output the compensated frame data; and a display driver integrated circuit configured to receive the compensated frame data from the host processor, and control the display panel such that at least one frame image corresponding to the compensated frame data is displayed on the display panel.

Display system performing display panel compensation and method of compensating display panel

A display driving device includes an encoding unit and a frame memory. The encoding unit is configured to generate final mode information and a compressed bit stream based on a macro block and a first reference pixel, and generate a final bit stream using the final mode information and the compressed bit stream. The frame memory is configured to store and provide the stored final bit stream to a decoding unit. The final mode information includes mode information and a reconstruction reference value. The mode information indicates a selected mode from a plurality of modes, each of the plurality of modes indicating selection pixels and non-selection pixels in the macro block. The selection pixels are pixels in the macro block selected for undergoing a compression operation, the non-selection pixels are pixels not selected for undergoing the compression operation, and the reconstruction reference value indicates encoding information for the non-selection pixels.

Display driver and method of operating image data processing device

In an image data processing device, a selection unit receives a block of original image data of a current image, a block of compressed and reconstructed image data of the current image, and a block of compressed and reconstructed data of a previous image that precedes the current image. A comparison unit compares the block of compressed and reconstructed image data of the current image with the block of compressed and reconstructed data of the previous image. An output unit, in the event that the comparison of the comparison unit results in a match, outputs the block of original image data of the current image as first output data, and, in the event that the comparison of the comparison unit does not result in a match, outputs the block of compressed and reconstructed data of the previous image as the first output data.

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Hwaseong-si, South Korea

Deoksoo Park