Abstract: There is provided a non-transitory computer readable storage medium tangibly embodying a machine-readable image having data encoded therein and embedded with a graphic, the machine-readable image adapted to be detected by a reader for decoding said encoded data, including: the graphic associated with an image descriptor calculated based on a chosen area of the graphic, the image descriptor being used in a reading process of said machine-readable image; a plurality of function patterns; and a plurality of dot modules having decoded values corresponding to at least said encoded data, the dot modules being positioned in one or more encoding regions of the machine-readable image relative to the function patterns and the chosen area of the graphic.

Abstract: There is provided a non-transitory computer-readable storage medium tangibly embodying machine-readable visual representation of data encoded therein, the data being retrievable by reading and decoding the visual representation by a visual code reader, the visual representation including: multiple function patterns; a first visual code comprising a first encoded message embedded therein, and a first subset of the function patterns, such that reading the first encoded message requires reading the first function patterns subset; and a second visual code comprising a second encoded message embedded therein, and a second subset of the function patterns, such that reading the second encoded message requires reading the second function patterns set, wherein the first function patterns subset and the second function patterns subset have at least one common function pattern, and wherein at least a part of the second visual code is read differently by the reader before and after a physical event occurs.

Abstract: There is provided a non-transitory computer-readable storage medium tangibly embodying machine-readable visual representation of data encoded therein, the data being retrievable by reading and decoding the visual representation by a visual code reader, the visual representation including: multiple function patterns; a first visual code comprising a first encoded message embedded therein, and a first subset of the function patterns, such that reading the first encoded message requires reading the first function patterns subset; and a second visual code comprising a second encoded message embedded therein, and a second subset of the function patterns, such that reading the second encoded message requires reading the second function patterns set, wherein the first function patterns subset and the second function patterns subset have at least one common function pattern, and wherein at least a part of the second visual code event occurs.

Abstract: There is provided a non-transitory computer readable storage medium tangibly embodying a machine-readable image having data encoded therein and embedded with a graphic, the machine-readable image adapted to be detected by a reader for decoding said encoded data, including: the graphic associated with an image descriptor calculated based on a chosen area of the graphic, the image descriptor being used in a reading process of said machine-readable image; a plurality of function patterns; and a plurality of dot modules having decoded values corresponding to at least said encoded data, the dot modules being positioned in one or more encoding regions of the machine-readable image relative to the function patterns and the chosen area of the graphic.

Abstract: A method of generating a readable matrix code image encoding a message based on an input image and a readable matrix coding specification, comprising: calculating function areas readable to comply with a function patterns specification; determining an extent of free cells and derived cells according to a code word specification; calculating decode input values for free cells such that the appearance of the free cells compared to respective areas of the input image complies with a visual perceptual similarity criterion and with the code word specification; and calculating decode input values for derived cells based on the free cells decode input values and in compliance with the code word specification.

Abstract: A method of generating a readable matrix code image encoding a message based on an input image and a readable matrix coding specification, comprising: calculating function areas readable to comply with a function patterns specification; determining an extent of free cells and derived cells according to a code word specification; calculating decode input values for free cells such that the appearance of the free cells compared to respective areas of the input image complies with a visual perceptual similarity criterion and with the code word specification; and calculating decode input values for derived cells based on the free cells decode input values and in compliance with the code word specification.

Abstract: A method of generating a readable matrix code image encoding a message based on an input image and a readable matrix coding specification, comprising: calculating function areas readable to comply with a function patterns specification; determining an extent of free cells and derived cells according to a code word specification; calculating decode input values for free cells such that the appearance of the free cells compared to respective areas of the input image complies with a visual perceptual similarity criterion and with the code word specification; and calculating decode input values for derived cells based on the free cells decode input values and in compliance with the code word specification.

Abstract: A method, comprising: obtaining a message; initializing a plurality of digital image elements based on a template of a machine-readable matrix code, wherein each digital image element is associated with one or more machine-readable matrix code cells; and computing a color and a translucency property for each one of the plurality of digital image elements based on the message and based on a machine-readable matrix code specification, wherein at least two cells having an identical decode input value are associated with respective digital image elements, and wherein the digital image elements with which each one of the at least two cells is associated have a different color and/or translucency property relative to the color and/or translucency property of the digital image elements that are associated with the other cells from said at least two cells; and generating a machine-readable matrix code mask using the plurality of digital image elements.

Abstract: A method of generating a readable matrix code image encoding a message based on an input image and a readable matrix coding specification, comprising: calculating function areas readable to comply with a function patterns specification; determining an extent of free cells and derived cells according to a code word specification; calculating decode input values for free cells such that the appearance of the free cells compared to respective areas of the input image complies with a visual perceptual similarity criterion and with the code word specification; and calculating decode input values for derived cells based on the free cells decode input values and in compliance with the code word specification.

Abstract: According to examples of the presently disclosed subject matter, a process for superimposing a matrix code on an image can include: (a) superimposing a frame on the image; (b) superimposing the matrix code on the image within the frame and providing a superimposition image; (c) moving the frame on the superimposition image in accordance with the command; and (d) repeating operations (a), (b) and (c) as required.

Abstract: A method of generating a readable matrix code image encoding a message based on an input image and a readable matrix coding specification, comprising: calculating function areas readable to comply with a function patterns specification; determining an extent of free cells and derived cells according to a code word specification; calculating decode input values for free cells such that the appearance of the free cells compared to respective areas of the input image complies with a visual perceptual similarity criterion and with the code word specification; and calculating decode input values for derived cells based on the free cells decode input values and in compliance with the code word specification.

Abstract: A method of generating a readable matrix code image encoding a message based on an input image and a readable matrix coding specification, comprising: calculating function areas readable to comply with a function patterns specification; determining an extent of free cells and derived cells according to a code word specification; calculating decode input values for free cells such that the appearance of the free cells compared to respective areas of the input image complies with a visual perceptual similarity criterion and with the code word specification; and calculating decode input values for derived cells based on the free cells decode input values and in compliance with the code word specification.