Provided is a computer-implemented method for authenticating an identification document. The method includes determining, with at least one processor, whether image data associated with the identification document has at least one predetermined indicia. In response to determining that the image data has the at least one predetermined indicia, the method includes determining whether the at least one predetermined indicia corresponds to at least one invalidation mark on the identification document, and, in response to determining that the at least one predetermined indicia corresponds to the at least one invalidation mark, determining, that the identification document is invalid. In response to determining that the identification document is invalid, the method includes preventing or causing the prevention of at least one action from being performed. A system and computer program product for authenticating identification documents are also disclosed.

The disclosure extends to methods, systems, and computer program products for producing an image in light deficient environments with luminance and chrominance emitted from a controlled light source.

The present disclosure relates to an image processing apparatus, an image processing method, a program, and an endoscope system capable of obtaining an image with high color discrimination. A histogram generation unit generates histograms of pixel values for an input image regarding luminance Y, saturation S, and hue H. A histogram correction unit subtracts components of the saturation, the luminance, and the hue of a portion determined to be a foreign object by a foreign object detection unit from the histograms regarding the saturation, the luminance, and the hue generated by the histogram generation unit and then weights by a value of a standard histogram. The present disclosure may be applied to the endoscope system which performs color conversion on an image input from a camera head through a scope, for example.

Provided are a display device and an image processing method thereof. In an embodiment, the display device includes a display panel including a plurality of pixels formed of red, green, blue, and white sub pixels, and an image processing unit for converting a three-color input image supplied to the red, green, blue, and white sub pixels into four-color image data and outputting an output image by applying a final gain calculated using a frame gain, a pixel gain, and a block gain of the pixels. The display device also includes a timing controller for outputting the output image from the image processing unit to the display panel. The block gain may be calculated using scaled versions of luminance values determined by converting a luminance of the three-color input image and position information of the pixels.

An image processing apparatus includes circuitry configured to store, in a memory, a primary image to be processed; accept an input of a selected area of the primary image stored in the memory and an input of a designated color for the selected area; and perform image processing to change a color of the selected area of the primary image to the designated color, to generate a secondary image.

A method for creating high dynamic range (HDR) images with an HDR camera system. The method includes capturing with a camera of the HDR camera system a plurality of camera exposures. The method also includes creating a first HDR image from a first subset of the plurality of camera exposures, each exposure of the first subset having a different exposure value. The method further includes creating a second HDR image from a second subset of the plurality of camera exposures, the second subset including at least one exposure from the first subset and at least one additional exposure captured more recently than the exposures of the first subset, each exposure of the second subset having a different exposure value.

An image processing apparatus comprising: a decision unit configured to decide a first color mapping method to a print color gamut for a first partial original based on a pixel value included in the first partial original and the print color gamut of a print unit and decide a second color mapping method to a print color gamut for a second partial original based on a pixel value included in the second partial original and the print color gamut of the print unit; and a color conversion unit configured to perform color conversion of the first partial original by the first color mapping method decided, and perform color conversion of the second partial original by the second color mapping method decided.

A method implements image background removal. The method includes receiving an image and processing the image using a first color distance threshold to generate a first alpha mask. The method further includes processing the first alpha mask using a cartesian edge threshold and a second color distance threshold to generate a second alpha mask. The method further includes presenting the image combined with the second alpha mask in a combined image.

A method, system, and computer program product for correcting color of elements rendered as visual display output of a computing device. Visual elements of a digital content container each comprising foreground and background portions for which foreground and background display color values being defined respectively are processed iteratively. Contrast ratio is calculated as function of the foreground and background display color values and if exceeded by an expected contrast ratio, expected foreground luminance value for the foreground portion and substitute foreground luminance value as function thereof are determined in relation to the expected contrast ratio and based on the background display color value. At least one foreground chromaticity value is obtained by converting the foreground display color value into a multi-dimensional chromatic valence color space, and an updated foreground display color value is obtained by inversely converting the substitute foreground luminance value and the at least one foreground chromaticity value.

The disclosure extends to methods, systems, and computer program products for producing an image in light deficient environments with luminance and chrominance emitted from a controlled light source.