Method for detecting and recognizing long-range high-density visual markers

A long-range, dense visual marker comprising:

• a black frame on a white background;
• a quadrangular grid contained in this frame;
• and where the grid is divided into longitudinal rows and vertical columns which make up a plurality of cells, wherein each cell corresponds to a different piece of data;
• and where this grid is made up of elements having four different color tones, with the four color tones being distinguishable from one another and forming a color palette;
• and wherein this marker further comprises:
• a color tone in each of the four cells forming the corners of the grid, at least one color tone for each cell of each corner, such that a darkest element is considered the last value forming the color palette;
• wherein a central cell of the grid determines a size of the grid;
• wherein the cells corresponding with a central row and column, except the central cell, define a cyclic redundancy check;
• and wherein the remaining cells forming the grid are elements dedicated to a message that can be transmitted by the visual marker.