An image processing apparatus includes circuitry to receive visible image data obtained by reading of a subject with a sensor having sensitivity to visible light in a visible wavelength range and invisible image data obtained by reading of the subject with a sensor having sensitivity to invisible light in an invisible wavelength range. The circuitry generates image data for displaying, in a designated color, a portion of the visible image data corresponding to a designated region of the invisible image data. The designated region has an absorption rate equal to or higher than a predetermined absorption rate.

An information processing apparatus includes circuitry configured to recognize a character in an original image by character recognition, to generate a font, calculate a certainty factor of the character recognition, determine a color of the font based on the certainty factor by a first processing method, and determine a replacement color by a second processing method based on the certainty factor, and convert the original image into an editable electronic document including the font and an image in which the character pixel has the replacement color. The replacement color is a color to which a color of a character pixel of the recognized character is replaced.

Certain examples relate to configuring a print processing system to produce rendered color outputs based on desired properties of said outputs using resources available to the print processing system. In these examples, print job data is received comprising image data and print property data. Color mapping data is configured to produce print mapping data based on at least the print property data. Print instructions for an image rendering device are generated based on the print mapping data. The print properties may be selectable by a user. Color mapping data may be characterized by color properties.

An image processing apparatus includes: an acquisition unit configured to acquire a plurality of first color values in a device independent color space, from information defining a predetermined gamut; a setting unit configured to set predetermined first dot percentages of a fluorescent color for the plurality of first color values acquired by the acquisition unit; a calculation unit configured to calculate a second dot percentage of the fluorescent color, based on a relationship between the plurality of first color values and the first dot percentages, the second dot percentage corresponding to an arbitrary second color value in the color space; and a generation unit configured to generate a first profile to convert the second color value to dot percentages of a process color and the fluorescent color, based on the second color value and the second dot percentage calculated by the calculation unit.

An image processing apparatus includes: a designating unit configured to designate a color; a reading unit configured to read a document to generate a document image; a conversion unit configured to convert a color of a pixel in the document image to a specific color based on a designated color designated by the designating unit; and a specification unit configured to specify a graphic region in the document image. The conversion unit is configured not to convert a color of a pixel in the graphic region specified by the specification unit to the specific color.

Techniques to improve detection and security of images, including formation and detection of matrix-based images. Some techniques include logic to process image data, generate one or more colorspaces associated with that data, and perform colorspace conversions based on the generated colorspace. The logic may be further configured to generate an image based on the colorspace conversions, including but not limited to a matrix bar code. The logic may be further configured to apply an infrared layer to the image, e.g. matrix barcode, generated from the colorspace conversion(s).

In some examples, a system detects a highlighted area in an image content, the highlighted area including a portion of the image content, and a highlighting mark that highlights the portion of the image content. The system applies a color adjustment process in the highlighted area, wherein the color adjustment process comprises adjusting a color of the highlighted area comprising the portion of the image content highlighted by the highlighting mark, and wherein the adjusting of the color of the highlighted area comprises adjusting color values of plural color components in a first color space.

An information processing apparatus includes circuitry configured to recognize a character in an original image by character recognition, to generate a font, calculate a certainty factor of the character recognition, determine a color of the font based on the certainty factor by a first processing method, and determine a replacement color by a second processing method based on the certainty factor, and convert the original image into an editable electronic document including the font and an image in which the character pixel has the replacement color. The replacement color is a color to which a color of a character pixel of the recognized character is replaced.

A printing device includes: an ink system having a plurality of types of inks; an image input unit accepting an input of an image to be printed; a print condition selection unit accepting a selection of N types of print conditions used when printing the image, N being an integer equal to or greater than 2; an application rate input unit accepting an input of an application rate of each of the N types of print conditions that are selected; a first ink amount calculation unit calculating an expected amount of ink of each of the plurality of types of inks used when it is assumed that the image is printed using singly each of the N types of print conditions that are selected; a second ink amount calculation unit calculating an actual amount of ink used when printing the image, using the expected amount of ink corresponding to each of the N types of print conditions and the application rates of the N types of print conditions; and a printing unit executing printing of the image according to the actual amount of ink.

An image processing apparatus includes: a designating unit configured to designate a color; a reading unit configured to read a document to generate a document image; a conversion unit configured to convert a color of a pixel in the document image to a specific color based on a designated color designated by the designating unit; and a specification unit configured to specify a graphic region in the document image. The conversion unit is configured not to convert a color of a pixel in the graphic region specified by the specification unit to the specific color.