average brightness การใช้

• This pushes the'average brightness'calculation inside the VCR way up-and disrupts the recording process.
• You might mean you want the average brightness of a series of images to match.
• Observations were made of the change in the total average brightness of the Pluto Charon system during the eclipses.
• Light-curve analysis gave a concurring rotation period of 3.201 hours with an averaged brightness variation of 0.18 magnitude ( ).
• Since 1995 the average brightness has dropped so that the 140 day variations are now between about magnitude 6 and 8.
• Another form of animal camouflage uses bioluminescence to increase the average brightness of an animal to match the brightness of the background.
• To the naked eye, Saturn is not a particularly exciting sight-just a yellowish star-like point of light in the sky, of average brightness.
• To conserve bandwidth, SSB would be desirable, but the video signal has significant low-frequency content ( average brightness ) and has rectangular synchronising pulses.
• But as Vimescarrot points out-they are scanning so rapidly that the average brightness wouldn't be low enough to hurt you even if they were more powerful than that.
• Each video clip in the database holds 10 parameters, including location, subject matter, average brightness, contrast, the type of space, the type of camera motion, and several more.
• As a result, the black level of the image will float depending on the average brightness of the image, which caused the iconoscope to have a distinctive patchy visual style.
• Through this process, the plate forms an electrical analog of the visual image, with the stored charge representing the inverse of the average brightness of the image at that location.
• :: If you know the ISO speed, the exposure value, and the average brightness of the image, I don't see why you'd need to know so much about the sensor.
• By emitting a small, measured amount of blue light, the aircraft's average brightness better matches that of the night sky, and the aircraft is able to fly closer to its target before being detected.
• L 2 Puppis varies in apparent magnitude by about 2 magnitudes with a period of 140 days . The average brightness also varies slowly over several years so that the total range is given as magnitude 2.6-6.0.
• To prevent that from being a problem the VCR examines the average brightness and contrast of the input signal and either boosts or limits the amount of brightness adjustment it does to it before writing it to the tape.
• Billed as a variable star pulsating, BC Cygni brightness varies from magnitude + 9.0 and + 10.8 with a period of 720 ?40 days . Between 1, 900 and 2, 000 appears to have increased its average brightness of 0.5 magnitudes.
• A lightcast is typically measured using all components of a combined lighting system, including the illumination source and any reflectors, lenses, filters, and diffusers, and the measurement may include average brightness across a flat two-dimensional surface as well as brightness across a curved of spherical surface.
• Furthermore, because each tube in the QT-8B is only lit for a fraction of the time, the tubes need a high momentary brightness in order to get a reasonable average brightness, so they must be driven with a high voltage, requiring a separate high-voltage power supply.
• :The control of the brightness is actually easier with incandescents because you can just alter the supply voltage-but that doesn't work with LED's-you have to turn the power on and off a few thousand times a second and alter the amount of'on time'versus'off time'to control the average brightness-and rely on persistance of vision to make it look like the LED is dimming.