Abstract:
A method and a device for obtaining a high dynamic range image are provided. The method includes: obtaining a pixel value of each pixel in two images of a same scene; determining a brightness value of each pixel in the two images; determining an objective brightness value of each pixel in a combined image combining the two images; determining a color value of each pixel in the two images; determining a color value of each pixel in the combined image; correcting the color value of each pixel in the combined image so as to obtain a corrected color value of each pixel in the combined image; determining a pixel value of each pixel in the combined image; and obtaining a high dynamic range image.
Abstract:
A method and a device for enhancing an edge of an image are provided. The method includes: obtaining a first gradient value of a pixel; determining whether the pixel is at a rough edge according to the first gradient value; if yes, obtaining a first edge enhancement value of the pixel and obtaining a first edge enhancement result of the pixel according to the first edge enhancement value; if no, obtaining a second gradient value of the pixel; determining whether the pixel is at a tiny edge according to the second gradient value; if yes, obtaining a second edge enhancement value of the pixel and obtaining a second edge enhancement result of the pixel according to the second edge enhancement value; if no, obtaining the pixel value of the pixel as the edge enhancement result of the pixel; and repeating above steps until each pixel of the image is processed.
Abstract:
The present invention proposes an image sensor, a monitoring system and a method for designing an image sensor, the image sensor including: a color filter, wherein, for light in infrared wavebands, the color filter only allows particular-wavelength infrared light to pass, and the color filter includes multiple n-color filters, wherein each filter corresponds to one color, the multiple n-color filters are used for dividing visible light in incident light into n-color light; and a light-sensitive chip, including a signal processing circuit and multiple light-sensitive units, the multiple light-sensitive units are respectively used for sensing intensity of light transmitting through the multiple n-color filters and generating electric signals corresponding to the light transmitting through the multiple n-color filters, the signal processing circuit is used for processing the electric signals for imaging, wherein a gain ratio of the signal processing circuit to the electric signals is A1: A2: ...: Ai: ...: Aj: ...: An, wherein an intensity transmittance of the multiple n-color filters to the particular-wavelength infrared light is M1: M2(A1/A2): ...: Mi(A1/Ai): ...: Mj(A1/Aj): ...: Mn(A1/An). The image sensor of the present invention increases an application range of the image sensor by adjusting optical characteristics of the color filter to achieve color cast desired by a user.
Abstract:
A method for reading out a high dynamic range image in an image sensor comprises: resetting a pixel array row by row from an initial row of the pixel array to process a first integration treatment for a first image when reaching a first start time; resetting the pixel array row by row from the initial row of the pixel array to process a second integration treatment for the first image when reaching a second start time; and resetting the pixel array row by row from the initial row of the pixel array to process a first integration treatment for a second image when reaching a third start time.
Abstract:
A method and a device for enhancing an edge of an image are provided. The method includes: obtaining a first gradient value of a pixel; determining whether the pixel is at a rough edge according to the first gradient value; if yes, obtaining a first edge enhancement value of the pixel and obtaining a first edge enhancement result of the pixel according to the first edge enhancement value; if no, obtaining a second gradient value of the pixel; determining whether the pixel is at a tiny edge according to the second gradient value; if yes, obtaining a second edge enhancement value of the pixel and obtaining a second edge enhancement result of the pixel according to the second edge enhancement value; if no, obtaining the pixel value of the pixel as the edge enhancement result of the pixel; and repeating above steps until each pixel of the image is processed.
Abstract:
A pixel array is provided. The pixel array comprises a plurality of two-dimensionally arranged 4*4 Bayer matrix units, in which the matrix unit comprises a plurality of pixels, any of a green filter, a red filter and a blue filter is disposed in one pixel, and a part of the green filters are replaced by a white color filter in the matrix units. A camera using the same and a color processing method based on the pixel array are also provided.