The present technology allows for easily checking whether a moving part is in focus. A video signal at a first frame rate is acquired from a captured video signal at a second frame rate N times higher than the first frame rate. N is an integer larger than or equal to two. Each frame of the captured video signal at the second frame rate is filtered in horizontal and vertical high pass filter processes so that an edge signal is detected. An edge signal corresponding to each frame at the first frame rate is generated in accordance with the edge signal of each frame. Synthesizing the generated edge signal onto the video signal at the first frame rate provides a video signal for a viewfinder display.

An image processing apparatus that selects images for digest reproduction from a plurality of images. The apparatus includes at least one processor or circuit configured to perform the operations of an information acquisition unit configured to acquire, for every image, shooting information including information on a lens used in shooting the images, an image evaluation unit configured to derive evaluation values for images based on the shooting information and an evaluation criterion, and an image selection unit configured to select images for digest reproduction by ranking images based on the evaluation values. The image evaluation unit derives the evaluation values of the images using different evaluation criteria based on characteristics of the lens used in shooting the images.

The disclosure extends to methods, systems, and computer program products for enhancing edges within an image in a light deficient environment, which utilizes knowledge of the expected noise pixel by pixel, to control the strength of the edge enhancement and thereby limit the impact of the enhancement on the perception of noise.

Provided is a circuit device that can appropriately detect an error in a display image in a head up display, an electronic apparatus, an error detection method, and the like. The circuit device includes an image processing circuit and a comparison circuit. The image processing circuit performs first mapping processing, which maps an input first image on a second image to be projected onto a projection target object, and second mapping processing, which converts the second image to a third image. The second mapping processing is reverse mapping processing of the first mapping processing. The comparison circuit performs comparison between the first image and the third image, and outputs the result of comparison as information for performing error detection on the second image.

A low-resolution image is displayed at high resolution and power consumption is reduced. Resolution is made higher by super-resolution processing. Then, display is performed with the luminance of a backlight controlled by local dimming after the super-resolution processing. By controlling the luminance of the backlight, power consumption can be reduced. Further, by performing the local dimming after the super-resolution processing, accurate display can be performed.

An image-pickup optical system includes: a first lens provided near an aperture stop and configured to correct aberration; and a second lens arranged between the first lens and an image sensor and configured to collect light, the first lens being a gradient index lens. The degree of freedom of design of a gradient index lens is higher than that of a lens having a constant refractive index, and a gradient index lens thus has a high potential as a device for a lens. Because such a gradient index lens is employed, it is possible to correct aberration without performing expensive processing such as polishing for example. In other words, as a result, costs may be reduced and image-forming properties may not be reduced at the same time.

The disclosure extends to methods, systems, and computer program products for enhancing edges within an image in a light deficient environment, which utilizes knowledge of the expected noise pixel by pixel, to control the strength of the edge enhancement and thereby limit the impact of the enhancement on the perception of noise.

An image processing unit performs gamma correction on a video signal using a gamma characteristic selected from among a plurality of gamma characteristics. Further, in a case where a gamma characteristic used in the gamma correction is changed by selection of the gamma characteristic, the image processing unit calculates a contour correction characteristic corresponding to the changed gamma characteristic and performs contour correction using the contour correction characteristic on the video signal.

A technique to perform edge-aware spatial noise filtering that may filter random noise from frames while maintaining the edges in the frames. The technique may include receiving a frame comprising a pint ht of pixels, filtering a subset of the plurality of pixels based on a weighting factor associated with each pixel of the subset of pixels, wherein the weighting factor is at least in part based on a difference in pixel value between the pixel and the individual pixels in the subset, and providing the filtered pixel to an encoder for encoding. Example implementation may include a spatial noise filter to receive an image, the noise level, and configuration parameters, and configured to determine weighting factors of pixels of the image based on differences in pixel values and a set of configuration parameters, and further configured to filter noise from the image based on the weighting factors of the pixels.

There is disclosed an image processing method in which a video signal is inputted from an imaging optical system in which astigmatism remains, and is displayed on a two-dimensional display apparatus. Based on the circumferential direction modulation factor and radial direction modulation factor of a lens used in the imaging optical system, a signal including the amount of vertical or horizontal modulation factor correction proportional to an nth power (n is an integer greater than 1) of a distance from a center position of a screen of the two-dimensional display apparatus is outputted for at least one vertical or horizontal frequency of the two-dimensional display apparatus.