Techniques are disclosed for a hybrid undo/redo for text editing, where non-linear undo and redo operations are performed across dynamic regions in a document and linear undo and redo operations are performed within the dynamic regions in the document. In an example, the hybrid undo/redo may be achieved by maintaining respective region offset values for the dynamic regions created in a document by the edits made to the document. In operation, the respective region offset values associated with the dynamic regions can be used to negate or otherwise counteract the effect of edits made in the dynamic regions.

An object counting device adjusts a signal to account for noise to improve object counting accuracy. A controller receives an electromagnetic radiation (e.g., light) intensity signal from radiation detectors and determines that its value is within a voltage threshold, thereby indicating that no object is passing through the radiation. The controller determines a derivative of the signal and that the derivative is less than a derivative threshold level for at least a predefined time. The controller then updates a base noise floor value to be the value of the radiation intensity signal to account for particles within a path of the electromagnetic radiation to improve an object counting accuracy. In some embodiments, the processor can scale the received radiation intensity signal in accordance with the updated base noise floor value.

A device (1) is described and represented for the determination of the particle size and/or the particle shape and/or optical properties, such as transparency, of particles (2) in a particle stream (3), with a feeding device (4) for the feeding of the particles (2) to a measuring zone (5), wherein the particles (2) flow through the measuring zone (5), with at least one illuminating device (6) for illuminating the measuring zone (5), with at least two camera devices (7, 8), each of which photographs a measurement region (9, 10) of the measuring zone (5) associated with the corresponding camera device (7, 8), wherein a first camera device (7) photographs a first, preferably larger, measurement region (10) with a first, preferably lesser, magnification and a second camera device (8) photographs a second, preferably smaller, measurement region (9) with a second, preferably stronger, magnification, with an imaging optics (11) for imaging the measurement regions (9, 10), and with an evaluating device for determining the particle size and/or the particle shape from the photographs of the measurement regions (9, 10), wherein the imaging optics (11) comprises at least one optical element (14), at which and/or by which the light radiation emanating from the measuring zone (5) is divided into at least two beam portions. According to the invention, it is provided that the illuminating device (6) is designed such that the first measurement region (10) and the second measurement region (9) are always illuminated together, wherein the first measurement region (10) is illuminated with the same intensity as the second measurement region (9).

Some embodiments disclose a device having two or more sensors and/or a processor that detects a differential between sensor readings and/or determines a flipping of the device based thereon. For example, the sensors may include light sensors. Optionally the device includes an output interface, for example an LCD (liquid crystal display). For example, the display reports flipping statistics. Optionally, the device includes a flat disk and/or is flipped like a coin. Some embodiments disclose a system for communication between a mobile device and a second device. Optionally, the second device includes an imager and/or a light source. Optionally, the mobile device includes an indicator and/or a display. Optionally the second device images the mobile device and/or reads a message on the display and/or determines an orientation of the indicator and/or sends messages to the mobile device via a coded series of flashes.

The invention comprises a system and an optical device (1) to facilitate the counting of objects, e.g. fish and other organisms living in freshwater or sea, especially when using large-scale equipment in fish-fanning. The system makes it possible to diminish the distance between the recording camera and the objects to be counted.

In the field of the counting of objects, a use is provided of a photosensitive assembly comprising at least one photodiode or one photoresistor, and a source of uniform illumination for illuminating the assembly, the establishment of a reference current supplied by the photosensitive assembly for an illuminated region of this assembly corresponding to a given fraction of the surface of the assembly, the disposition of objects to be counted against the photosensitive assembly, the illumination of the assembly by the source, the objects masking a part of the surface of the assembly, measurement of the current supplied by the assembly, and determination of a ratio between measured current and reference current to deduce the proportion between the surface area of photosensitive element illuminated and the surface area masked by the objects disposed. From this ratio, information on the number of objects disposed on the photosensitive assembly is extracted.

An arrangement of counting passengers in an elevator using two separate counting mechanisms is disclosed. The elevator car typically has a curtain of light arranged to the door and a load weighing device arranged to measure the weight of the elevator car. From the information recorded by the curtain of light and the load weighing device, it is possible to count the number of passengers. The reliability of the counting results can be improved by processing the counting results for forming a combined counting result that provides a more reliable counting result when the independent counts deviate from each other.

The present invention relates to a chip counter, which transmits an X-ray beam through a tape reel around which a tape having a plurality of semiconductor chips mounted in a row therein is wound, acquires an image scattered or diffracted by the semiconductor chips, and processes the acquired image, so as to count the number of the semiconductor chips, wherein: the X-ray beam transmitted through the tape reel (1) is sensed by a fluorescent intensifying screen (60); a fluorescent light emitted from the fluorescent intensifying screen (60) according to the sensing of the X-ray beam is captured by a camera (70), so that the number of the semiconductor chips is counted from an image in which the semiconductor chips are displayed by a dotted image; and the camera (70) is protected by an X-ray beam shielding member (100: 110; 120; and 130).

Techniques are disclosed for a hybrid undo/redo for text editing, where non-linear undo and redo operations are performed across dynamic regions in a document and linear undo and redo operations are performed within the dynamic regions in the document. In an example, the hybrid undo/redo may be achieved by maintaining respective region offset values for the dynamic regions created in a document by the edits made to the document. In operation, the respective region offset values associated with the dynamic regions can be used to negate or otherwise counteract the effect of edits made in the dynamic regions.

Techniques are disclosed for a hybrid undo/redo for text editing, where non-linear undo and redo operations are performed across dynamic regions in a document and linear undo and redo operations are performed within the dynamic regions in the document. In an example, the hybrid undo/redo may be achieved by maintaining respective region offset values for the dynamic regions created in a document by the edits made to the document. In operation, the respective region offset values associated with the dynamic regions can be used to negate or otherwise counteract the effect of edits made in the dynamic regions.