An image processing apparatus includes: input means for inputting a frame image; generation means for generating a plurality of sub-frame images from the frame image input by the input means; image processing means for changing a brightness and spatial frequency component of a first sub-frame image out of the plurality of sub-frame images to be different from a brightness and spatial frequency component of a second sub-frame image out of the plurality of sub-frame images; and output means for outputting the first sub-frame image and the second sub-frame image.

An image processing apparatus includes: input means for inputting a frame image; generation means for generating a plurality of sub-frame images from the frame image input by the input means; image processing means for changing a brightness and spatial frequency component of a first sub-frame image out of the plurality of sub-frame images to be different from a brightness and spatial frequency component of a second sub-frame image out of the plurality of sub-frame images; and output means for outputting the first sub-frame image and the second sub-frame image.

A video display with high image quality is achieved even when a frame cycle varies for each frame. A video display system includes a video source device 11 which outputs a video signal and a display device 12 which displays a video based on a video signal output from the video source device 11. The video source device 11 includes a drawing time prediction unit 104 and a transmitting unit 102. The drawing time prediction unit 104 calculates frame interval information indicating an interval from when a video signal of a first frame is output to when a video signal of a second frame to be a next frame of the first frame is output. The transmitting unit 102 transmits the frame interval information calculated by the drawing time prediction unit 104 to the display device 12.

A method and a display driver for compensating the perceptual bias of edge boost when driving a display panel are provided. The method can pre-process an input image to compensate for a perceptual bias of edge boost, e.g., at a contiguous group of color bands in the input image prior to sending the input image in a form of plural frames to a display panel for display. The method includes the steps of partitioning an input image into one or more grayscale regions, segmenting the grayscale regions into a plurality of color bands, detecting a subtle but perceivably significant change of color or luminance between two adjacent color bands, identifying a transition region and performing color dilution on the transition region. The display driver can include an input buffer, an image processor configured to execute the above method and an output buffer.

Embodiments of the present disclosure disclose an image details processing method, comprises: obtaining each luminance data in the image; performing non-linear transformation on the each luminance data to obtain corresponding transformed data; performing the low frequency processing on the transformed data to obtain low frequency data; based on the low-frequency data and the transformed data, determining the corrected luminance data. The embodiments of the present disclosure also disclose an image details processing apparatus, a terminal, and a storage medium.

The following provides a system and method to display images on a display screen (e.g. via a display panel or by projection) and the processing of image data therefor. In one aspect, the system implements a luminance retargeting method for altering the perceived contrast and/or colours of an image to match their appearance under different luminance levels. In another aspect, the system may provide a method for transforming an image locally within a sub-area of an image to adjust image contrast for display by a display device. In yet another aspect, the system may provide a method for transforming an image of a first luminance to adjust a perceived colour hue thereof for display by a display device according to a second luminance. In yet another aspect, the system may provide a method for transforming an image having a first luminance to adjust a colour saturation thereof for display by a display device having a second luminance.

A first discrete Fourier transform unit generates a first frequency spectrum by two-dimensional discrete Fourier transform of an input image signal. A second discrete Fourier transform unit generates a second frequency spectrum by two-dimensional discrete Fourier transform of an output image signal output from a high frequency emphasis circuit. A first and second high frequency component index generators generate a first and second high frequency component indices indicating a total amount of high frequency components based on the first and second frequency spectra, respectively. A high frequency component emphasis ratio calculator calculates a high frequency component emphasis ratio which is a ratio between a first high frequency component index and a second high frequency component index. An emphasis amount controller generates an emphasis amount control value based on a high frequency component emphasis ratio and a target emphasis ratio, and supplies it to the high frequency emphasis circuit.

A method and apparatus for exchanging a protocol is provided. A protocol may be indicated in a preset section of a vertical blanking interval (VBI) of an analog video and thereby transmitted. A protocol transmission apparatus may transmit an analog video signal in which a protocol signal is indicated to a protocol reception apparatus. The protocol reception apparatus may detect a protocol by receiving the analog video signal from the protocol transmission apparatus.

A method and apparatus for exchanging a protocol is provided. A protocol may be indicated in a preset section of a vertical blanking interval (VBI) of an analog video and thereby transmitted. A protocol transmission apparatus may transmit an analog video signal in which a protocol signal is indicated to a protocol reception apparatus. The protocol reception apparatus may detect a protocol by receiving the analog video signal from the protocol transmission apparatus.

The present invention discloses a signal correction method and apparatus, and a terminal, and relates to the signal processing field. The method includes: receiving an input signal, where the input signal is an audio signal or an image signal, the input signal includes signals that are corresponding to multiple units respectively, and any one of the units is a sampling point of the audio signal or a pixel unit of the image signal; performing texture detection on a target unit to obtain a first signal; extracting a high frequency component of a signal of the target unit to obtain a second signal; performing multiplication processing and non-linear processing on the first signal and the second signal to obtain a sharpness correction signal of the target unit; and performing sharpness correction on the signal of the target unit according to the sharpness correction signal.