Method and device for the stroboscopic recording and reproduction of repetitive processes
First Claim
1. Method for the stroboscopic recording and reproduction of images of a repetitive process (12), particularly moving vocal chords (larynx diagnostics), comprising the following procedural steps:
- illuminate the process (12) to be observed with a steady light source (14), generate trigger pulses STrigger for triggering exposures for the recording of image information of the process (12) with an image sensor (16), adding the image information from several successive exposures in a back-ground memory of the image sensor (16) to form image information sums, store the image information sums obtained this way in the back-ground memory (18) of the image sensor (16) read and delete the back-ground memory (18), process the image information sums to a video signal.
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Abstract
The invention relates to a method and to a device for the stroboscopic recording and reproduction of images of a repetitive process (12), especially of moving vocal chords (larynx diagnostics). The aim of the invention is to improve image quality, especially the brightness and definition of the images while requiring little lighting equipment. According to the inventive method, the process (12) to be observed is illuminated with a steady light source (14). Trigger pulses STrigger are generated to trigger exposures to record the image information of the process (12) by an image sensor (16). The image information from a plurality of subsequent exposures is added in a back-ground memory of the image sensor (16) to produce image information sums. The image information sums thus obtained are stored in the background memory (18) of the image sensor (16) and the background memory (18) is read and deleted, and the image information sums are processed to give a video signal.
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Citations
17 Claims
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1. Method for the stroboscopic recording and reproduction of images of a repetitive process (12), particularly moving vocal chords (larynx diagnostics), comprising the following procedural steps:
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illuminate the process (12) to be observed with a steady light source (14), generate trigger pulses STrigger for triggering exposures for the recording of image information of the process (12) with an image sensor (16), adding the image information from several successive exposures in a back-ground memory of the image sensor (16) to form image information sums, store the image information sums obtained this way in the back-ground memory (18) of the image sensor (16) read and delete the back-ground memory (18), process the image information sums to a video signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 13, 14, 15, 16, 17)
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10. Device (10) for the stroboscopic recording and reproduction of images of a repetitive process (12), particularly moving vocal chords (larynx diagnostics), comprising:
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a steady light source (14) to illuminate the process (12) to be observed, a trigger device (30) for generating trigger pulses, an image sensor (16) with image segments (17) a control device (28) with an exposure control device (40), an addition control unit (42), a storage control unit (44) as well as a reading/deletion control device (46), wherein through the exposure control device (40) the start of an exposure of the image segments (17) can be controlled as a reaction to at least one of the trigger pulses as well as the end of the exposure after a specified exposure time, a back-ground memory (18), in which through the addition/storage control devices (42, 44) image information can be added and/or stored, wherein as a reaction to the end of an exposure time the image information that has been accumulated as a result of the exposure on the surface of the image sensor (16) in the image segments (17) is added to the image information sums stored until then in the back-ground memory (18) of the image sensor (16), a transducer device (20), which is connected with the a image sensor (16) and which transforms the image information read from the back-ground memory (18) of the image sensor (16) into a video signal SVideo. - View Dependent Claims (11, 12)
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Specification