Abstract: A dynamic art form display displays electronic and optical art, pictures and movies using various display alteration methods in conjunction with flat electronic and optical wall and hand-held, portable display devices. The display alteration methods include light phasing, image propagation, time of day synchronization and combinations thereof. Viewer, environmental and automated control of the display, including a programmable borders and frames, are provided. User controls come in a variety of options such as voice commands and push buttons, and may be completely hidden in the form of voice or touch screen input. Environmental inputs come in a number of forms including amount of light present (light phasing), human viewer proximity and noise level. Automated control comes in the form of programmed parameters such as time of day, image propagation, image propagation rate, display duration, display intensity, volume level and display selection.

Abstract: An inconspicuous system is defined for measuring the absolute luminance of a CRT display and the actual effective luminance as would be measured from the viewer's perspective due to additional reflected ambient illuminance in order to enable closed loop adjustment of the display device and to thereby enable luminance quality control, facilitate image perception, and ascertain fidelity of image presentation conveniently over time.

Abstract: A projection display comprises a display device forming an image for projection onto a display screen. A photo sensor is adjacent to the display screen and generates a first signal responsive to a level of the projected image illumination incident on the photo sensor. A detector is coupled to receive the first signal and generates an output signal indicative of detecting the first signal. A source of a predetermined detection threshold value is coupled to the detector for determining a threshold at which the detection of the first signal occurs. Wherein the first signal exceeds the predetermined detection threshold value, the detector detects and generates the output signal indicative of signal detection, and generates a second signal for coupling to the source to change the predetermined detection threshold value.

Abstract: An apparatus for displaying a digital video signal includes a shade reflection ratio calculator and a brightness compensator. The shade reflection ratio calculator calculates a shade reflection ratio r of each pixel per display clock using a linear distance function between a center pixel and a current pixel on a screen. The brightness compensator compensates brightness of each pixel by applying the shade reflection ratio value r and a brightness adjustment width Yrate to an input digital video signal. Thus, it is possible to improve picture quality of a video displayed on a screen.

Abstract: In an ambient light-dependent video-signal processing method including the steps of measuring (LDR) an amount of ambient light to obtain a measured amount of ambient light, and processing (VSP) a video signal in dependence upon the measured amount of ambient light, the video signal is substantially immediately processed when there is a large change in the measured amount of ambient light, while the video signal is delayed being processed until an occurrence of a scene change in the video signal when there is a small change in the measured amount of ambient light.

Abstract: A system and method for subtracting reflection images, caused by proximately located light sources, from an image displayed on a video display screen. The present invention includes a camera mounted in close proximity to a video display device having a display screen, and oriented to point towards a user. The camera is connected to a control unit capable of image processing and of adjusting the images displayed on the display screen. Light from the proximately located light source falls upon the display screen causing glare from the light source and forming reflection images of the user and other objects on the display screen. In order to eliminate these undesirable reflection images from the display screen, the control unit first locates the reflection images on the display screen, and then eliminates these images by adjusting the brightness values of the reflection images' pixels.

Abstract: A color printing system includes a central processing unit for generating color image data, a color monitor for displaying color image data generated by the central processing unit and a color temperature sensing device for sensing color temperature of viewing light in which color images displayed on the monitor and color images printed by the printer are viewed. A first light source has a light output intensity controllable by the central processing unit. The central processing unit is adapted to control the intensity of the first light source in accordance with the color temperature sensed by the sensing device so as to match the color temperature sensed by the sensing device to a potential color temperature. Additionally, a second light source may be provided. The second light source has a different color temperature than the first light source and the central processor can adjust the intensity of the first and second light source based on relative color temperatures.

Abstract: A spatial light modulator based imaging system (30) with improved peak white performance characteristics. The apparent dynamic range of the spatial light modulator (74) is increased by adding light to pixels neighboring a saturated pixel. An apparent bloom effect is created with the pixels neighboring the saturated pixel appearing brighter, to give sunlight reflecting from the surface of a lake, for instance, more sparkle or highlights. Charts or equations are utilized to determine the degree to which pixel brightness is increased for neighboring pixels. The closer a pixel to a saturated pixel, and the greater the saturation of a particular pixel, the greater increase in brightness for neighboring pixels.

Abstract: An image compensation system and methods for video appliances to reproduce an optimum image, by judging exterior environment and by compensating for an original image by the judged exterior environment. According to the system and methods, a color sensor senses color of exterior lighting of an appliance, and provides electrical signals corresponding to color components of the sensed color. The signals are converted into a digital value by an analog-to-digital converter. A microprocessor judges the type of exterior lighting, by the digitized values, and searches for image compensation data according to the judged exterior lighting. It thereby makes a video processor compensate for an original image signal.

Abstract: A picture processing apparatus in which the color appearance of a soft copy image and that of a hard copy picture coincide with each other with high precision despite difference in the optical environment. A first conversion unit 12 is responsive to the optical environmental parameters specifying a picture handled by an input device 3 to convert picture data from the input device 3 corresponding to a picture handled by the input device 3 into index data for color appearance associated with the appearance under the ambient light. A second conversion unit 14 is responsive to the optical environmental parameters specifying the luminance of the ambient light in which to observe the picture handled by the output device 4 to convert the color appearance index data obtained by the first conversion unit 12 so that the color appearance under the ambient light will be coincident with the color appearance under the ambient light under which to view the picture handled by the input device 3.

Abstract: Users of video telephones or multimedia terminals cannot determine whether ambient light conditions during a transmission to another terminal are always of good quality. Provision is made for an indication regarding the ambient light conditions during a telephone call, and control thereof. By means of a circuit arrangement including a photocell (F) to detect incident light, a signal (II) is formed, which corresponds to the ambient light conditions. The signal (II) is displayed together with a video signal (I), or is used for control purposes.

Abstract: A device and method for producing clinically useful hardcopy or archived records from a real-time imaging system includes a controller which monitors variable settings on the system effecting display monitor images. The controller then compensates the signal sent to the hardcopy recorder or archiving device via gamma curve or Look Up Table (LUT) application and/or directly through recorder brightness and contrast controls.

Abstract: A color printing system includes a central processing unit for generating color image data, a color monitor for displaying color image data generated by the central processing unit and a color temperature sensing device for sensing color temperature of viewing light in which color images displayed on the monitor and color images printed by the printer are viewed. A first light source has a light output intensity controllable by the central processing unit. The central processing unit is adapted to control the intensity of the first light source in accordance with the color temperature sensed by the sensing device so as to match the color temperature sensed by the sensing device to a potential color temperature. Additionally, a second light source may be provided. The second light source has a different color temperature than the first light source and the central processor can adjust the intensity of the first and second light source based on relative color temperatures.

Abstract: An automatically adjustable black stretch control apparatus for a continually adjusting the black stretch of a luminance signal which comprises a black stretch control means for controlling the amount of stretch of the black part of the luminance signal. A luminance signal is input to a plurality of detecting means, each of which detects the percentage of the luminance signal that is within a specified range during a unit period (i.e. a frame). The output of each detecting means is input to one of a plurality of preprocessing means which generates a control index. The output of each preprocessing means is input to one of a plurality of inferring means for creating a synthesized function indicative of the quality of the signal from each of the detecting means.

Abstract: A radiological system, wherein x-ray images (radiation images) are produced and are converted, through a video chain, for display as a video image, the system having a modulation transfer function, has the capability of influencing the modulation transfer function dependent on ambient light which is present at the display. To that end, a control unit is provided which provides two-dimensional control of the modulation transfer function dependent on illumination which is present in the environment of the display. The control is effected by means of a two-dimensional spatial frequency filter.