In an example method, a set of source pixels corresponding to an image to be printed and a dot pattern of pixels including information to be encoded across the image are received. The dot pattern of pixels is mapped to a corresponding subset of the source pixels. A value of a clipping channel color in the subset of the source pixels is modified based on an original value of the clipping channel color for each pixel in the subset. The clipping channel color is used to detect the dot pattern of pixels. The image including the subset of pixels with modified clipping channel colors is printed.

An image processing apparatus includes a reading unit configured to read an image of a document and generate image data, a first binarization unit configured to generate binary image data by performing halftone processing on the image data generated by the reading unit, a smoothing unit configured to perform smoothing processing on a character region of the binary image data, a second binarization unit configured to perform binarization processing on the character region having been subjected to the smoothing processing by the smoothing unit, and a character recognition unit configured to perform character recognition processing on the character region having been subjected to the binarization processing by the second binarization unit.

Provided is an image reading apparatus capable of improving the image quality of a document in which texts and images are appeared in the same page. The camera captures a document in page units to obtain captured image data. An area classifying unit classifies the captured image data into areas for each content. An area selecting unit selects whether or not to output the captured image data based on the classification of the area and state of the captured image data. An image scanner scans the area of the document for the area selected not to output the captured image data. An image processing unit processes the captured image data or scanned image data for each area and outputs or deletes it as area data. A document output unit collects the processed area data, reconstructs the data into document data, and outputs it.

To appropriately perform blotting out processing for a portion that a user intends to prevent from being displayed for an electronic document having text information on a character string for search, along with image information. The information processing apparatus according to the present invention, in a case where the electronic document is an electronic document in a format searchable for a character string and where a character string obtained by performing OCR processing for a character image object existing in an area and a character string of an invisible text object existing in the area do not match with each other, a setting unit performs re-setting of an area to which blotting out processing is applied for at least one of the character image object and the invisible text object so that both the character strings match with each other.

A non-transitory computer-readable medium stores computer-readable program instructions configured to, when executed, cause an information processing device to receive a scan instruction to cause an image scanner to perform image scanning of a document sheet, the scan instruction including a scan setting indicating whether to perform monochrome scanning or color scanning, receive image data generated by the image scanning of the document sheet according to the scan instruction, obtain base color information representing whether black is set as a base color in an OS of the information processing device, determine whether an image represented by the image data includes a text, and display the image in a black-white inverted manner, when the scan instruction includes the scan setting indicating to perform the monochrome scanning, the base color information represents that black is set as the base color, and it is determined that the image includes a text.

A visibility adjusting unit (22) displays on the display device (15a) a user interface to specify a visibility level, detects with the input device (15b) a user operation performed to the user interface such that the user operating specifies a visibility level, determines the visibility level based on the detected user operation, and converts the determined visibility level to a resolution in accordance with a predetermined conversion rule. The scan control unit (21) specifies to the image scanning unit (11) the resolution obtained in the conversion performed by the visibility adjusting unit (22) and causes the image scanning unit (11) to generate image data of the document image, and converts the generated image data to image data of a specified data type.

A reading method guidance apparatus includes a receiving unit, an acquisition unit, and a guidance unit. The receiving unit receives a document size that is a size of a document as a reading target. The acquisition unit acquires an image of at least a partial area in the document. The guidance unit provides an operator with guidance about a reading procedure when the document is read by a first reading apparatus in plural batches, using a feature amount obtained from the acquired image, the received document size, and a readable size that is a size of an area readable by the first reading apparatus.

A storage control device specifies, based on association information, blocks in each of which the boundary is included from among a plurality of blocks. The storage control device generates, for each of the specified blocks, first image data and second image data. The first image data is image data that includes a first object and that does not include a second object, whereas the second image data is image data that includes a second object. The storage control device stores the generated first image data and the second image data in a storage unit so as to be identifiable.

An image processing apparatus generates a binary image from a multivalue input image, detects a character region and a non-character region from the binary image, and clips regions surrounding each of characters included in the detected character region as character clipping rectangles. The apparatus determines, on the basis of a black pixel density of the binary image included in the character clipping rectangle, whether or not the character clipping rectangle is a character region and determines, on the basis of a number of pixels included in the character clipping rectangle determined to be a non-character region, whether or not the character clipping rectangle determined to be a non-character region is a character region.

An information processing device performs processing on document image data. The document image data includes first image data of a plurality of images and second image data. The first image data undergoes character recognition processing. The second image data does not undergo character recognition processing. The information processing device includes a detecting section, an extracting section, and a processing section. The detecting section detects the first image data from the document image data. The extracting section extracts the first image data from the document image data. The processing section generates composite image data by compositing the images of the first image data and performs character recognition on the composite image data.