A vehicular vision system includes a plurality of vehicle cameras disposed at a vehicle, a trailer camera disposed at a trailer, and a video display screen disposed at the vehicle and viewable by a driver of the vehicle. When the trailer is hitched to the vehicle, the trailer camera captures image data and provides captured image data to an electronic control unit (ECU). The plurality of vehicle cameras capture image data and provide captured image data to the ECU. An auxiliary camera is detachably attached at an exterior side portion of the trailer. With the auxiliary camera detachably attached at the exterior side portion of the trailer and during a reversing maneuver of the vehicle with the trailer hitched to the vehicle, and responsive to a user input, video images derived from the image data captured by the auxiliary camera are displayed for viewing by the driver of the vehicle.

A histogram is detected from an acquired image, and a ratio of a pixel distribution for a range from a preliminarily set low-brightness-side determination point to a preliminarily set high-brightness-side determination point to the entire histogram is calculated for the detected histogram. In a case where the ratio exceeds a preliminarily set threshold, it is estimated that there is fog or mist and a subject looks hazy.

An imaging processing device and an imaging processing method that can solve a problem generated in visible light photographing in a case where DBPF is used instead of an infrared cut filter. An imaging sensor includes a color filter, and DBPH that has a transmission characteristic in a visible-light band, blocking characteristic in a first wavelength band adjacent to a long-wavelength side of the visible-light band, and transmission characteristic in a second wavelength band that is a part of the first wavelength band. A signal processing unit subtracts an infrared signal, which is output from an infrared pixel, from each color signal output from a pixel in each color of visible light in the imaging sensor. Here, in a case where each color signal reaches a pixel saturation level, control of performing correction in such a manner that an infrared signal subtracted from each color signal is lowered is performed.

An image processing unit of a processor for an endoscope includes: an emphasis processing calculation unit performing nonlinear gradation conversion for a pixel value of a pixel of interest, using each pixel of a captured image as the pixel of interest; and a preprocessing unit setting a reference upper limit characteristic line and a reference lower limit characteristic line in order to adjust an output pixel value after the nonlinear gradation conversion and calculating a degree of variation in pixel values in a partial setting region around the pixel of interest. The emphasis processing calculation unit calculates an output ratio of the output pixel value to a maximum pixel value that can be taken by the captured image, an adjustment upper limit value and an adjustment lower limit value, and an emphasis-processed pixel value, using the adjustment upper limit value, the adjustment lower limit value, and the output ratio.

An image processing unit of a processor for an endoscope includes: an emphasis processing calculation unit performing nonlinear gradation conversion for a pixel value of a pixel of interest, using each pixel of a captured image as the pixel of interest; and a preprocessing unit setting a reference upper limit characteristic line and a reference lower limit characteristic line in order to adjust an output pixel value after the nonlinear gradation conversion and calculating a degree of variation in pixel values in a partial setting region around the pixel of interest. The emphasis processing calculation unit calculates an output ratio of the output pixel value to a maximum pixel value that can be taken by the captured image, an adjustment upper limit value and an adjustment lower limit value, and an emphasis-processed pixel value, using the adjustment upper limit value, the adjustment lower limit value, and the output ratio.

An image processing apparatus receives an input of an image signal obtained by imaging an object, and performs signal conversion on the image signal to output the image signal to a display apparatus. The image processing apparatus includes a calculation unit configured to calculate an absolute luminance value of the object from a luminance value of the object acquired from the image signal and an exposure parameter in the imaging, a determination unit configured to determine a predetermined absolute luminance code for the luminance value of the object according to input-output characteristics of the display apparatus so that the object is displayed at the absolute luminance value on the display apparatus, and a conversion unit configured to perform signal conversion for converting the image signal based on a relationship between the luminance value of the object and the absolute luminance code.

The electronic camera has an imaging device that images a subject with subject reflectance R (%) with a dynamic range wider than that at displaying or printing to acquire image data and a recording device that converts the image data acquired by the imaging device with a predetermined function and records the converted image data and the information on the function as digital values (digit). Therefore, a printed image with an automatically or manually corrected density can be obtained at the displaying or the printing.

A processing device includes generation circuitry, storage circuitry, and interpolation circuitry. The generation circuitry generates a first index based on a numerical value of a high-order predetermined number of digits. The converted value of the reference input value corresponding to each index obtained in the generation circuitry is beforehand stored as a look-up table in the storage circuitry. The interpolation circuitry acquires the first converted value corresponding to the first index using the look-up table. And the interpolation circuitry computes the second index that adjoins the first index by carrying out increment or decrement of the first index. Furthermore, the interpolation circuitry acquires the second converted value corresponding to the second index using the look-up table of the storage circuitry. And the interpolation circuitry computes the converted value of the input value by linearity interpolation based on the shift amount from the reference input value of the first index.

An electronic device is provided. The electronic device includes a camera, a memory, and at least one processor electrically coupled to the camera and the memory. The at least one processor may obtain a plurality of image frames through the camera, in response to a shooting start command, obtain a shooting command subsequent to the shooting start command, select a first number of image frames from among the plurality of image frames obtained before the shooting command, in response to the shooting command, and generate a first image synthesized based on the selected first number of image frames.

An electronic device is provided. The electronic device includes a camera, a memory, and at least one processor electrically coupled to the camera and the memory. The at least one processor may obtain a plurality of image frames through the camera, in response to a shooting start command, obtain a shooting command subsequent to the shooting start command, select a first number of image frames from among the plurality of image frames obtained before the shooting command, in response to the shooting command, and generate a first image synthesized based on the selected first number of image frames.