Abstract: This invention is related to a technical field of optical fingerprint recognition. It particularly designs a coordinate transformation method for imaging under screen, a storage medium and an electronic device. The a [sic] coordinate transformation method for imaging under screen includes steps of: calculating a coordinate system shrink coefficient; copying each luminous point in a fingerprint image to a shrunken coordinate system; and moving the entirety to the shrunken coordinate system with a relative distance between fingerprint information around a luminous point and a center of the luminous point being kept unchanged. Through coordinate transformation, restoration of the fingerprint image is guaranteed, and also pixels are guaranteed to not be lost at the same time, thereby ensuring the definition of the fingerprint image thus restored. In addition, this manner for restoring fingerprint images is simple in calculation process, fast in restoration speed, and good in quality.

Abstract: The present invention publishes an under-display image acquisition structure and an electronic device, including a light-permeable cover plate, a light source plate and a light sensor. The light source plate and the light sensor are disposed under the light-permeable cover plate. The light-permeable cover plate has a light-permeable area beyond an edge of the light sensor. The light source plate has a light source area beyond an edge of the light sensor in the direction of the light-permeable area. Light from light sources in the light source area is directed onto the light sensor after being totally reflected by the light-permeable cover plate. Distinguishable from the prior art, the above technical solution utilizes the optical total reflection principle so that image data outside the range of the light sensor can be captured by the light sensor.

Abstract: An optical imaging processing method and storage medium. Among them, the method includes a following step of obtaining an image that includes a biometric pattern, and further performs steps of detecting a bright spot on the image, and performing equalization on the bright spot and a neighborhood thereof. The abovementioned scheme can effectively utilize information of lens-free imaging to perform effective removal of image noise and bright and dark spots in a single image under lens-free imaging, so as to obtain a fingerprint portion block image of a single image that satisfies requirements for software processing, solving processing issues of biometric image in lens-free optical imaging.

Abstract: This invention publishes a driving and image obtaining method for under-screen imaging, a storage medium and an electronic device, wherein the driving method includes: lighting up pixels of a plurality of separate point light source areas of a display panel, the point light source areas being arranged in arrays and spaced with nonluminous pixel points; and obtaining, through a photoelectric sensor, light emitted by the pixel points that is totally reflected by a light-permeable cover plate; the display panel and the photoelectric sensor being placed under the light-permeable cover plate. Compared with the existing techniques, the driving method of the present invention improves imaging efficiency by lighting up pixels of multiple point light source areas simultaneously, obtaining a large amount of image information each time; since multiple pixels form a point light source, a brightness of the point light source is increased, and the quality of optical image imaging under the lens-less screen is improved.

Abstract: This invention is related to a technical field of optical fingerprint recognition. It particularly designs a coordinate transformation method for imaging under screen, a storage medium and an electronic device. The a [sic] coordinate transformation method for imaging under screen includes steps of: calculating a coordinate system shrink coefficient; copying each luminous point in a fingerprint image to a shrunken coordinate system; and moving the entirety to the shrunken coordinate system with a relative distance between fingerprint information around a luminous point and a center of the luminous point being kept unchanged. Through coordinate transformation, restoration of the fingerprint image is guaranteed, and also pixels are guaranteed to not be lost at the same time, thereby ensuring the definition of the fingerprint image thus restored. In addition, this manner for restoring fingerprint images is simple in calculation process, fast in restoration speed, and good in quality.

Abstract: The present invention is related to a technical field of optical fingerprint, especially related to a method for automatically search for thickness parameters of a display screen, a storage medium and an electronic device. The method for automatically search for thickness parameters of a display screen includes the following steps: processing a fingerprint image to decide a circular dark region corresponding to any point light source, wherein the circular dark region has a diameter of D, and calculating a screen thickness parameter based on a value of D. Effectively using information of lens-free imaging to calculate the screen thickness parameter in real time facilitates subsequent data processing.