摘要:
A preprocessor performs a signal processing operation by using an image signal DVa generated by picking up a subject image. A frame adder adds frames of an image signal DVb generated by the preprocessor so as to generate an image signal DVc with a changed frame rate. When changing the setting of the signal processing operation of the preprocessor, the signal processing operation is restarted with the new setting at the start or at the end of a frame addition period (in units of frame addition periods) of the frame adder based on a determination signal indicating the frame addition period.
摘要:
A video camera system capable of matching colors between configured video cameras by effectively reducing color differences therebetween. A red, a green and a blue signal from imaging devices are amplified by preamplifiers and video amplifiers before being fed to a color matching circuit. The color matching circuit performs color matching in accordance with the levels of the red, green and blue signals using variables of gains and DC offset values. The gains and DC offset values are determined by the color matching circuit executing predetermined operation expressions. With a plurality of colors imaged in advance by the video cameras to be matched in color with a reference video camera, necessary coefficients of the operation expressions are obtained by use of the level measurements (tristimulus values) of the red, green and blue signals from an integrating circuit of each camera. Executing the operation expressions thus obtained allows the matching circuit to absorb the color differences between the reference video camera on the one hand, and the video camera to be matched in color therewith on the other hand.
摘要:
Video signal compression apparatus for analyzing an input video signal to determine the distribution of signal levels and compressing the input signal as a function of the distribution to produce an output video signal.
摘要:
A solid state image pickup apparatus comprises a solid state imager having a plurality of pixels and which outputs a signal corresponding to light incident thereon, a sample and hold circuit for sampling and holding analog output signals from respective pixels of the solid state imager in response to a sampling signal, a low-pass filter connected to the analog output of the sample and hold circuit for eliminating a high frequency component therefrom so as to output a filtered signal, an analog-to-digital converter for converting the filtered signal to a digital filtered signal, a memory for storing position data indicative of a position of a defective pixel, a circuit for stopping the supply of the sampling signal to the sample and hold circuit in response to the position data indicating a defective pixel so that the output signal from the defective pixel is replaced with the analog output signal from a pixel read immediately prior thereto, an interpolating circuit connected to the analog-to-digital converter for interpolating a digital signal corresponding to the position data indicating a defective pixel by using the digital signals corresponding to other pixels surrounding the defective pixel so as to generate an interpolated signal, and a switch for selectively outputting the digital filtered signal and the interpolated signal in accordance with the position data.
摘要:
An image signal generator generates an imaging signal having a frame rate that is controlled to be variable. A frame rate converter generates a monitor image signal. Upon receiving communication information from an external source, a controller controls the operations of the image signal generator and the frame rate converter on the basis of the communication information. When an instruction to specify the frame rate of the monitor image signal is given from a user interface, the controller controls the frame rate converter to generate a monitor image signal having a specified frame rate by giving priority to this instruction over the communication information.
摘要:
A video-signal-processing device has luminance conversion section that performs level compression on three input primary-color signals of a color video signal at a same luminance adjustment compression ratio with a hue and a saturation of the color video signal being kept constant, thereby generating three compressed primary-color signals. The device also has saturation conversion section that performs level conversion on the three compressed primary-color signals by using a saturation compression ratio if a maximum level of at least one of the three compressed primary-color signals exceeds a first level. The saturation conversion section sets the saturation compression ratio by using a minimum level one of the three compressed primary-color signals.
摘要:
A preprocessor performs a signal processing operation by using an image signal DVa generated by picking up a subject image. A frame adder adds frames of an image signal DVb generated by the preprocessor so as to generate an image signal DVc with a changed frame rate. When changing the setting of the signal processing operation of the preprocessor, the signal processing operation is restarted with the new setting at the start or at the end of a frame addition period (in units of frame addition periods) of the frame adder based on a determination signal indicating the frame addition period.
摘要:
An arithmetic processing section executes an arithmetic process on a flicker correction signal output from a flicker correction signal outputting section and corresponding to the flicker component contained in a video signal of each of specific periods and the video signal of each of the specific periods to form a corrected video signal of the specific period corrected for the flicker component of the specific period for the video signal of each of the specific periods formed as a succession of specific periods and containing a flicker component as supplied from a video signal generating section in response to a correction error signal of each of the specific periods supplied from a correction error detecting section.
摘要:
An image shooting unit 21 generates an image signal Spa having an image shooting frame rate. A frame addition unit 41 performs frame addition on the image signal DVb having the image shooting frame rate. Control unit 61 controls drive unit 71 and the frame addition unit 41 based on a frame rate setting signal RSF from operation unit 62, and controls a variation of the image shooting frame rate in image shooting unit 21 and/or a switch of the number of additive frames in the frame addition unit 41, thus allowing an image signal DVj having a desired frame rate to be output from the frame addition unit 41. Thus, increasing the additive frame in number even without decreasing the image shooting frame rate at a low-speed shooting of the image allows such an image signal DVj shot at the low speed to be obtained.
摘要:
An image signal generator generates an imaging signal having a frame rate that is controlled to be variable. A frame rate converter generates a monitor image signal. Upon receiving communication information from an external source, a controller controls the operations of the image signal generator and the frame rate converter on the basis of the communication information. When an instruction to specify the frame rate of the monitor image signal is given from a user interface, the controller controls the frame rate converter to generate a monitor image signal having a specified frame rate by giving priority to this instruction over the communication information.