46results about How to "Increase the number of gray levels" patented technology

An image pick-up device includes: a photoelectric converter (5) which converts light into electric charge; an accumulation capacitor (6) which accumulates charge converted by the photoelectric conversion element(s); reset means (7) for discharging electric charge from the accumulation capacitor (6); and an amplification thin film transistor (8) which receives and amplifies electric charge accumulated in the accumulation capacitor (6) and outputs the amplified charge. The amplification thin film transistor (8) forms a source follower circuit.

The invention provides a display panel. The display panel comprises a backlight module and a display screen body, the backlight module comprises a central control panel, a control module, a first driving module, a second driving module and a plurality of light emitting diodes. The control module comprises a first control unit and a second control unit which are electrically connected with the central control board, the first driving module is electrically connected with the first control unit, and the second driving module is electrically connected with the second control unit; the display screen body comprises a first split body and a second split body, the light emitting diode corresponding to the first split body is electrically connected with the first driving module, and the light emitting diode corresponding to the second split body is electrically connected with the second driving module. At least two control modules are simultaneously mounted on one central control board, and more driving modules are controlled through more control modules, so that the number of backlight partitions is increased on the premise that the central control board is not increased.

An image processing method includes the steps of detecting the dynamic range of input image data, performing edge enhancement processing to increase the number of grayscale levels of the input image data, and performing dithering processing to reduce the number of grayscale levels of each pixel of the input image data. The number of pseudo grayscale levels is determined based on a parameter indicating the level of the dynamic range and a parameter indicating the level of the edge enhancement processing.

The present invention relates to the technical field of image processing, and in particular discloses a dynamic range compression method for infrared image detail enhancement, which includes the following steps: counting the histogram of the AD value of the input infrared image; finding the maximum AD value whose number of pixels in the histogram is greater than 0 x max with minimum AD value X min ; Calculate the mapped minimum AD value X s0 ; Calculate the mapped maximum AD value X s5 ; Find [X in the histogram s0 , X s5 ] The AD value X with the largest number of pixels in the interval p1 ;(6) from X p1 to x s0 Search for the AD value X of the lower boundary of the main area 1 s1 ; from X p1 to x s5 Search the upper boundary AD value X of the main area 1 s2 ; Find [X in the histogram s2 , X s5 ] The number of pixels in the interval is at most AD value X p2 ; from X p2 to x s2 Search for the AD value X of the lower boundary of the main area 2 s3 ; from X p2 to x s5 Search the upper boundary AD value X of the main area 2 s4 ;Calculate the number of ADs in the main area and the number of ADs in the transition area; calculate the number of gray levels mapped in the transition area; calculate the number of gray levels mapped in the main area 1; calculate the number of gray levels mapped in the main area 1; calculate the corresponding gray levels of the corresponding AD values; input The AD value of the infrared image is mapped to [Y s0 , Y s5 ] range gray value and display it on the display device.

The invention discloses a sub-pixel circuit, an active electroluminescence display and a driving method thereof. The sub-pixel circuit includes at least one electroluminescence device and a first drive transistor or a second drive transistor connected to the electroluminescence device. and the third driving transistor; the cathode of the electroluminescent device is connected to electricity, the anode of the electroluminescent device is connected to the output terminal of the first driving transistor, and the input terminal of the first driving transistor is connected to the signal line, so The control end of the first drive transistor is connected to the scan line; or the anode of the electroluminescence device is connected to the output end of the second drive transistor, the input end of the second drive transistor is connected to the output end of the third drive transistor, and the third drive transistor is connected to the output end of the third drive transistor. The input end of the drive transistor is connected to electricity, the control end of the second drive transistor is connected to the scan line, and the control end of the third drive transistor is connected to the signal line. By reducing the load on the scan line and the signal line and changing the number of signal lines, the resolution is improved. Rate.