A method to extract content written on a marker board is disclosed. The method includes generating, by a computer processor, a sequence of samples from a video stream, wherein the video stream comprises a series of images of the marker board, generating, by the computer processor, a center of mass (COM) of foreground content of each sample in the sequence of samples, detecting, by the computer processor and based on a predetermined criterion, a stabilized change of the COM in the sequence of samples, and extracting, based at least on detecting the stabilized change, a portion of static written content from the video stream.

One embodiment provides a method, including: receiving, at an electronic device, a handwriting input operation by a user; acquiring, using a processor, a first input feature information associated with the handwriting input operation; and generating, using a processor, an index based on the first input feature information. Other aspects are described and claimed.

A system and method for remotely generating an original signature provided by a signatory as a user of a first mobile device are disclosed. According to one embodiment, the system comprises a cloud server having a signature transmission API, and a video stream module configured to facilitate a live video stream. The system further includes a pen plotter having a plotter controller communicatively coupled to the cloud server by the signature transmission API. The pen plotter has a mechanical arm configured to receive an ink pen, and a video capture device communicatively coupled to the video stream module of the cloud server and configured to capture video of the pen plotter and transmit to the video stream module.

An image processing device includes a handwriting renderer, an image renderer, an external image renderer, a serializer, a creator, a recognizer, and a concatenation unit. The handwriting renderer is configured to render a stroke on a first layer. The image renderer is configured to render an image on a second layer lower than the first layer. The external image renderer is configured to render an external image on a third layer lower than the second layer. The serializer is configured to convert the stroke rendered on the first layer and the images rendered on the second and third layers into text data. The creator is configured to create document data corresponding to one page based on the text data. The recognizer is configured to acquire a character string from the stroke. The concatenation unit is configured to concatenate adjacent characters on the string with an unnecessary space therebetween being deleted.

The disclosure relates to a character input method and system, which may include a digital device including an input surface and an output surface. The method and system may include or perform operations including: displaying a character string using a recognition area and an insertion area of the output surface; selecting a position within the character string; displaying, in the recognition area, a part of the string ending with a first character while masking, in the insertion area, a part of the string starting with a second, succeeding character; detecting an input stroke entered manually in the insertion area; performing handwriting recognition; inserting, at the position within the string of characters, a recognised character(s); and scrolling the string in the recognition area so as to display, in the recognition area, the recognised character(s) that were inserted into the string of characters.

Aspects of the present disclosure provide a gesture recognition method and an apparatus for capturing gesture. The apparatus categorizes the raw data of a gesture into gesture elements, and utilizes the contextual dependency between the gesture elements to perform gesture recognition with a high degree of accuracy and small data size. A gesture may be formed by a sequence of one or more gesture elements.

According to one embodiment, an electronic apparatus performs a character recognition process, uses, if a stroke in a first area of the first handwritten document and a stroke in a second area are the same, a character recognition result of the first handwritten document, and performs, if a stroke in the first area and a stroke in the second area are different, the character recognition process for the second area including the different stroke.

A method of providing a handwriting style correction function and an electronic device adapted to the method are provided. The electronic device includes: a touch screen; a processor electrically connected to the touch screen; and a memory electrically connected to the processor. The memory stores instructions which, when executed by the processor, cause the processor to perform operations comprising: displaying at least one reference character on the touch screen; receiving a touch gesture via the touch screen; displaying a track of the received touch gesture on the touch screen; recognizing the track of the touch gesture as at least one input character corresponding to at least one reference character; identifying at least one reference character and at least one input character, as at least one stroke, based on a preset standard; comparing corresponding strokes of at least one reference character with at least one input character, and determining errors by strokes; and summing the errors by strokes of each of at least one reference character, and determining errors by characters.

A computer-implemented method selectively outputs two types of vector data representative of user-input strokes. Type one stroke objects are generated in a device including a position input sensor, on which a user operates a pointer to generate a type one stroke object representative of a stroke. A stroke starts at a pen-down time at which the pointer is placed on the position input sensor and ends at a pen-up time at which the pointer is removed therefrom. Real-time rendering of a type one stroke object is started after the pen-down time of a stroke without waiting for the pen-up time. After completion of a type one stroke object through its pen-up time, the type one stroke object is converted to a type two stroke object, which is a set of curves defining a boundary of the stroke, and can be exported as a file or rendered on a display.

A computer-implemented method is provided to selectively output two types of vector data representative of user-input strokes. Type one stroke objects are generated in a device including a position input sensor, on which a user operates a pointer to generate a type one stroke object representative of a stroke. A stroke starts at a pen-down time at which the pointer is placed on the position input sensor and ends at a pen-up time at which the pointer is removed from the position input sensor. Real-time rendering of a type one stroke object is started after the pen-down time of a stroke without waiting for the pen-up time. After completion of a type one stroke object through its pen-up time, the type one stroke object is converted to a type two stroke object, which is a set of curves defining a boundary of the stroke, and can be rendered.