Systems and methods for rendering a secure document with a text selection capability. The methods comprise, by a processor creating a graphic that includes at least one non-text object of a source document and a watermark, adding the graphic onto a base document, and creating a secure document by adding one or more text objects from the source document onto the base document, the secured document configured to enable text selection of the one or more of the added text objects. The secure document includes a file format that is different than that of the source document.

An image processing method includes an acquisition step of acquiring image data by capturing printed matter, wherein first information and second information, indicating a type of the first information, are embedded in the printed matter as an electronic watermark, an extraction step of extracting the first information and the second information from the image data acquired at the acquisition step, and a processing step of processing the extracted first information by different processing methods in accordance with the extracted second information. Based on that the type of the first information indicated by the second information is a predetermined type, the extracted first information is processed at the processing step, by a predetermined processing method for access to an external device using the extracted first information and display of a web page based on the access.

A controller of an image processing apparatus performs one or both of an enlargement process and a conversion process when a coded image in which information is coded is included in the image data. The enlargement process is a process of pasting an enlarged coded image instead of the coded image on the image data. The conversion process is a process of pasting decoded information instead of the coded image.

The present document provides image processing methods and apparatus. One claim recites: obtaining a signal to be encoded in color image data, the signal comprising a plural-bit payload; predicting a resulting color of overprinting several inks on a substrate, the overprinting representing the color image data encoded with the signal; using the resulting color for both i) visibility evaluation of the overprinting, and ii) signal robustness evaluation of the overprinting as seen by an imaging device. Other claims and combinations are provided.

Systems and methods for rendering a secure document with a text selection capability. The methods comprise: performing first operations, by a computing device, to determine which objects of a source document are non-text objects; creating, by the computing device, an image file representing a graphic consisting of the non-text objects of the source document and a watermark merged together as a single image; drawing the graphic represented by the image file to a base document having a first file format different than a second file format of the source document; and drawing text objects to the base document from the source document so as to create the secure document with the text selection capability.

An image processing apparatus includes a data analyzing part, and a data generating part. The data analyzing part is configured to refer to original image data for generating a printed material utilizing a first consumable material absorbing a larger amount of visible light than invisible light and a second consumable material absorbing a larger amount of invisible light than visible light, and to a correction data table indicating whether invisible light is absorbed for each density value regarding the first consumable material, and specify a pixel having a density value of the first consumable material and absorbing invisible light in the original image data. The data generating part is configured to correct the density value of the first consumable material in the specified pixel to a density value of a third consumable material not absorbing invisible light, to generate corrected image data.

An image processing method includes a selection step of selecting a type of first information that is embedded in printed matter in accordance with instructions by a user via a user interface, an embedment step of embedding the first information and second information indicating a type selected at the selection step in a printing-target image as an electronic watermark, a printing control step of causing a printing apparatus to print the printing-target image in which the first information and the second information have been embedded at the embedment step, an acquisition step of acquiring image data by capturing the printed matter, an extraction step of extracting the first information and the second information from the image data acquired at the acquisition step, and a processing step of processing the first information extracted at the extraction step by different processing methods in accordance with the second information.

A device includes memory and a processor connected to the memory to execute instructions. The instructions are to determine luminance values of pixels of an original image and to determine chrominance values of pixels of a processed image obtained from performance of an image processing operation on the original image. The instructions are further to combine the luminance values of the pixels of the original image and the chrominance values of the pixels of the processed image to obtain a resultant image.

Imagery captured by a point-of-sale scanner (e.g., in a supermarket) for purposes of barcode decoding, is contrast-enhanced preparatory to use for watermark decodingdespite the fact that such operation may sometimes result in contrast between certain pixels being diminished. A great variety of other features and arrangements are also detailed.

A method for converting images to a unified image format for artificial intelligence deep training comprises acquiring a plurality of images and annotating the plurality of images. An annotation site of the plurality of images is determined to be quadrilateral or polygonal. The format of the annotated images is converted according to a first conversion rule when the annotation site of the annotated training images or the annotated verification images is found to be quadrilateral and the format of the annotated images is converted according to a second conversion rule when the annotation site of the annotated training images or the annotated verification images is found to be not a quadrilateral. A device employing the method is also disclosed.