A character adjustment method is used for adjusting the character so as to output the character to a second pixel matrix of an output device. The character is designed in a first pixel matrix. The method includes determining a constant, an upper density limit and a lower density limit according to at least one feature value of the output device; performing an interpolation calculation for obtaining a variation parameter according to a density of the character in the first pixel matrix, the constant, the upper density limit and the lower density limit; adjusting the character according to the variation parameter; and outputting the adjusted character to the second pixel matrix by the output device.

A system for and method of storing two two-dimensional objects on an information storage medium, the method comprising: acquiring a first two-dimensional object and a second, a first perimeter of the first two-dimensional object comprising a first perimeter portion and a second perimeter portion, and the second two-dimensional object comprising the second perimeter portion and a third perimeter portion; storing, on the information storage medium, the first perimeter as storing the first and the second perimeter portions; storing, on the information storage medium, the second perimeter as storing the third perimeter portion and storing a reference to the second perimeter portion.

A system for and method of storing two two-dimensional objects on an information storage medium, the method comprising: acquiring a first two-dimensional object and a second, a first perimeter of the first two-dimensional object comprising a first perimeter portion and a second perimeter portion, and the second two-dimensional object comprising the second perimeter portion and a third perimeter portion; storing, on the information storage medium, the first perimeter as storing the first and the second perimeter portions; storing, on the information storage medium, the second perimeter as storing the third perimeter portion and storing a reference to the second perimeter portion.

A scanning beam display system includes an optical module, an image control module, and a display screen on which optical beams are scanned. The optical module includes a vertical adjuster placed in the optical paths of the beams to control and adjust positions of the optical beams along a generally vertical direction on the display screen, and a control unit configured to receive control instructions for the vertical adjuster and to control the vertical adjuster to be at one of a predetermined number of orientations to place the scanning optical beams at a corresponding distinct position on the display screen. The control unit is further configured to apply an adjustment offset to each orientation of the vertical adjuster such that each immediately vertically adjacent pair of beam footprints projected on the display screen resulting from the plurality of positions have a vertical overlap that is larger than a first threshold.

A wearable device worn on the head of a user determines the head orientation of the user. A tracking application executing on the wearable device determines the orientation of the wearable device relative to a frame of reference. A mobile application executing on a mobile device likewise determines the orientation of the mobile device relative to the frame of reference. The frame of reference may be magnetic north or an inertial reference frame shared between the wearable device and the mobile device. The tracking application estimates the head orientation of the user, relative to the mobile device, based on the relative orientations of the wearable device and the mobile device.

A scanning beam display system includes an optical module, an image control module, and a display screen on which optical beams are scanned. The optical module includes a vertical adjuster placed in the optical paths of the beams to control and adjust positions of the optical beams along a generally vertical direction on the display screen, and a control unit configured to receive control instructions for the vertical adjuster and to control the vertical adjuster to be at one of a predetermined number of orientations to place the scanning optical beams at a corresponding distinct position on the display screen. The control unit is further configured to apply an adjustment offset to each orientation of the vertical adjuster such that each immediately vertically adjacent pair of beam footprints projected on the display screen resulting from the plurality of positions have a vertical overlap that is larger than a first threshold.

A scanning beam display system includes an optical module, an image control module, and a display screen on which optical beams are scanned. The optical module includes a vertical adjuster placed in the optical paths of the beams to control and adjust positions of the optical beams along a generally vertical direction on the display screen, and a control unit configured to receive control instructions for the vertical adjuster and to control the vertical adjuster to be at one of a predetermined number of orientations to place the scanning optical beams at a corresponding distinct position on the display screen. The control unit is further configured to apply an adjustment offset to each orientation of the vertical adjuster such that each immediately vertically adjacent pair of beam footprints projected on the display screen resulting from the plurality of positions have a vertical overlap that is larger than a first threshold.

A character adjustment method is used for adjusting the character so as to output the character to a second pixel matrix of an output device. The character is designed in a first pixel matrix. The method includes determining a constant, an upper density limit and a lower density limit according to at least one feature value of the output device; performing an interpolation calculation for obtaining a variation parameter according to a density of the character in the first pixel matrix, the constant, the upper density limit and the lower density limit; adjusting the character according to the variation parameter; and outputting the adjusted character to the second pixel matrix by the output device.

A magnetic scanning method includes acquiring an image from a storage device of a magnetic scanning device, controlling a magnetic read-write head of the magnetic scanning device to touch a reference point on a plane, generating an electric signal which reflects relevant information of the acquired image, inputting the electric signal reflecting the relevant information of the acquired image to the magnetic read-write head, when the electric signal reflecting the relevant information of the acquired image flows through the magnetic read-write head, controlling the magnetic read-write head to generate a magnetic field corresponding to the electric signal, controlling the magnetic read-write head to move and scan the plane from the reference point, to magnetize the magnetic powder on the plane by the magnetic field, and driving the magnetic powder to move relatively to generate an image similar to the acquired image.

Font recognition and similarity determination techniques and systems are described. In a first example, localization techniques are described to train a model using machine learning (e.g., a convolutional neural network) using training images. The model is then used to localize text in a subsequently received image, and may do so automatically and without user intervention, e.g., without specifying any of the edges of a bounding box. In a second example, a deep neural network is directly learned as an embedding function of a model that is usable to determine font similarity. In a third example, techniques are described that leverage attributes described in metadata associated with fonts as part of font recognition and similarity determinations.