摘要:
Interlace scan PALplus signals are fed to a 133-line delay (32) which is a delay element of 133 lines. The output of the delay element is fed to field memories (23 and 25). The memory (23) is a first memory for one-field delay and the output of the memory (23) is fed to a field memory (24) which is provided as a second memory. The memory (24) performs shuffling on a field A and, at the same time, data in the memory (24) is read at a double speed so that the same field A may appear continuously four times. The field memory (25) which is provided as a third memory is controlled so that readout from the memory (25) may be started prescribed time after write and performs shuffling on a field B. At the same time, readout from the memory (25) is performed at a double speed so that the same field B may appear continuously four times. The picture signals read out from the memories (24 and 25) are fed to a vertical filter/median processing section (26) which is provided as a scanning line interpolating means.
摘要:
One of AABB-type and ABAB-type field double-speed image signals is selectively generated by selection signals (SL1 and SL2). In the AABB-type, among 1st, 2nd, 3rd, and 4th output fields, the pixel position of the 2nd output field in the vertical direction is the same as the pixel position of the 1st output field in the vertical direction, and the pixel position of the 4th output field in the vertical direction is the same as the pixel position of the 3rd output field in the vertical direction. In the ABAB-type, among 1st, 2nd, 3rd, and 4th output fields, the pixel position of the 2nd output field in the vertical direction is shifted from the pixel position of the 1st output field in the vertical direction, and the pixel position of the 4th output field in the vertical direction is shifted from the pixel position of the 3rd output field in the vertical direction.
摘要:
The present invention relates to an image pickup apparatus, a method for capturing an image, and a method for designing the image pickup apparatus capable of realizing a fixed focal length image pickup apparatus of high resolution and fine resolution at a low cost by disposing a plurality of image pickup elements therein. An image pickup device 31 is of a focal coincidence type having a plurality of image pickup elements, such as CCD sensors 62-1 to 62-3, arranged in an array. That is, the image pickup device 31 has an optical system including a first image formation system 41 for forming an image of focal coincidence, a field lens 43 disposed in an image formation plane or in the vicinity of the image formation plane of the first image formation system, and a second image formation system group formed by a plurality of second image formation systems arranged in an array and including an image pickup element CCD sensor 62-K (K is a value between 1 and 3 in this example) for capturing the image formed on itself and a zoom lens 61-K for reforming a predetermined part of the image formed on the image formation plane on the CCD sensor 62-K. The present invention is applicable to a digital still camera and a digital video camera including a plurality of image pickup elements.
摘要:
An information signal processing device which is preferable applied to conversion, e. g., from an SD signal to an HD signal. Pixel data on a tap selectively taken out of the SD signal and corresponding to the position of interest of the HD signal are used to acquire the class (CL) to which the data on the pixel in the position of interest belongs. A coefficient creating circuit (136) creates coefficient data (Wi) on the coefficients of the classes on the basis of the class coefficient type data and the values of image quality adjusting parameters (h, v) by the operation the user. An arithmetic circuit (127) employs an estimation formula to determine data on the pixel in the position of interest of the HD signal by using the data (xi) on the tap selectively taken from the SD signal by a tap selecting circuit (121) and corresponding to the position of interest of the HD signal and the coefficient data (Wi) read out of a memory (134) and corresponding to the class (CL). The image quality can be freely adjusted on a plurality of axes.
摘要:
An information signal processing device preferably used for converting the format of an image signal or the image size. An input image signal Vin (525i signal) is converted to an output image signal Vout (such as a 1080i signal, an XGA signal, or a 525i signal for producing a display image of different magnification). A class code CL is determined on the basis of tap data selectively extracted from the input image signal Vin and corresponding to each pixel (pixel in the position of interest) in a unit pixel block constituting the output image signal Vout. A coefficient creating circuit (136) creates coefficient data on each class used when pixel data on the position of interest is created by calculation according to the coefficient type data on each class and phase information h, v on the position of interest created by a phase information creating circuit (139). An arithmetic circuit (127) creates pixel data y1 to yp on the position of interest by an estimation formula by using tap data xi corresponding to the position of interest and coefficient data Wi corresponding to the class code CL.
摘要:
An interlaced input image signal is supplied at a field frequency of 50 Hz. Class detection circuits detect classes corresponding to the patterns of the level distribution of input pixels near an output pixel to be produced. Prediction factor sets corresponding to the classes are read out of prediction factor memories. Product-sum operation circuits calculate data on the output image signals by using a linear estimation formula of estimation taps (pixels of the input image signals) and the prediction factor sets. The pixel values (M and S) of the output image signals of 50 Hz are outputted by the product-sum circuits. The pixel values (M and S) from the product-sum circuits are converted into signals of a frequency of 60 Hz. A selector selects one of the outputs of the field memories alternately and generates an output image signal (field frequency of 60 Hz).
摘要:
An image converter and a method for converting a first image signal including a plurality of pixel data to a second image signal including a plurality of pixel data. Particularly, an image converter and an image conversion method, since a class top or a prediction tap from image slicing is controlled in accordance with a feature quantity indicating the quantity of blur of imputted image data, optimum pixel data can be extracted as a class tap or a prediction tap and appropriate predictive processing can be carried out even when the inputted image data have a poor image quality.
摘要:
An information signal processing device which is preferably applied to conversion, e. g., from an SD signal to an HD signal. Pixel data on a tap selectively taken out of the SD signal and corresponding to the position of interest of the HD signal are used to acquire the class (CL) to which the data on the pixel in the position of interest belongs. A coefficient creating circuit (136) creates data (Wi) on the coefficients of the classes on the basis of the class coefficient type data and the values of image quality adjusting parameters (h, v) by the operation of the user. An arithmetic circuit (127) employs an estimation formula to determine data on the pixel in the position of interest of the HD signal by using the data (xi) on the tap selectively taken from the SD signal by a tap selecting circuit (121) and corresponding to the position of interest of the HD signal and the coefficient data (Wi) read out of a memory (134) and corresponding to the class (CL). Coefficient data (Wi) corresponding to the value of any parameter can be produced to save the capacity of a memory.
摘要:
An information signal processing device which is preferably used for converting the format or image size of an image signal. An input image signal (Vin) is converted into an output image signal (Vout) of a different format or image size. A class code (CL) is acquired from the data on the tap corresponding to each pixel (a pixel of interest) in a unit pixel block constructing the signal (Vout), extracted from the signal (Vin). A product-sum device (137) generates coefficient data (ai0 to ai8) of a generation formula of the upper layer of each class during a vertical blanking period by using a generation formula of the lower layer and using coefficient kind data (bij0 to bij8) of each class and resolution information (g, f), and acquires coefficient data (Wi) of an estimation formula during a vertical effective scanning period by using a generation formula of the upper layer and using the coefficient data (ai0 to ai8) corresponding to the code (CL) and phase information (h, v). An operation circuit (127) acquires data (y) of the pixel of interest by using an estimation formula and using data (xi) on the tap corresponding to the pixel of interest and coefficient data (Wi) from the product-sum device (137).
摘要:
An information signal processing device preferably used for converting, e.g., an SD signal to an HD signal. A space class and a motion class are extracted from pixel data concerning a tap selectively extracted from an SD signal and corresponding to the position of interest of an HD signal. Coefficient type data and item selection information on each class are stored in a memory bank (135). A coefficient creating circuit (136) creates coefficient data Wi on each class according to the coefficient type data and image quality adjustment parameters h, v by using a creation formula including an item selected according to the item selection information. An arithmetic circuit (127) creates pixel data on the position of interest of the HD signal from prediction tap data xi and the coefficient data Wi by using an estimation formula. Without degrading the accuracy of the arithmetic operation, the amount of coefficient type data and the scale of the arithmetic operation unit can be reduced, and the approximation accuracy of the coefficient curved surface is improved.