摘要:
A color chart for a color adjustment of a color printer and a color monitor attached to an endoscope, has a predetermined number of color cells. The color cells have the same form, and are arranged in one of a grid state and a linear state. Each of the color cells is formed by blending two colors from a group of three colors comprising red, green, and blue, according to a predetermined ratio, in an additive color process. The color cells show a gradation of color such that a color tone of each of the color cells changes continuously in one direction.
摘要:
A color chart for a color adjustment of a color printer and a color monitor attached to an endoscope, has a predetermined number of color cells. The color cells have the same form, and are arranged in one of a grid state and a linear state. Each of the color cells is formed by blending two colors from a group of three colors comprising red, green, and blue, according to a predetermined ratio, in an additive color process. The color cells show a gradation of color such that a color tone of each of the color cells changes continuously in one direction.
摘要:
A color chart for a color adjustment of a color printer and a color monitor attached to an endoscope, has first-, second-, and third-color cell groups. The first-, second-, and third-color cell groups have respective first, second, and third predetermined numbers of color cells which have the same form, and which are linearly arranged in a first direction. The first-, second-, and third-color cell groups are arranged in a second direction which is perpendicular to the first direction.
摘要:
A natural-circulation type boiling water reactor includes a plurality of divided chimneys provided above a reactor core and a number of fuel assemblies are charged in the reactor core. The natural-circulation type boiling water reactor is provided with a pressure equalization structure arranged on rectangular-columnar lattice plates of the divided chimneys for equalizing pressures in divided chimney portions so as to equalize the pressures of the divided chimneys with the pressure equalization structure.
摘要:
The imaging device has an image sensor with a mosaic color filter array composed of three or four color elements. The color elements are arrayed such that each color element is opposite a pixel in said image sensor. The imaging device further has a first interpolate on processor, a color-transform processor, and a second interpolation processor. The first interpolation processor carries out a first interpolation process for generating a series of color signals in each pixel. The first interpolation processor interpolates missing color signals in each pixel on the basis of color signals generated in adjacent pixels. Then, the color-transform processor carries out a color-transform process for generating a series of color-transform signals from the series of color signals in each pixel. The second interpolation processor replaces at least one color-transform signal that is based on a color signal interpolated by the first interpolation process with at least one interpolated color-transform signal. The second interpolation processor carries out a second interpolation process for generating the interpolation color-transform signal from color-transform signals of surrounding pixels.
摘要:
An image interpolating device comprises a color filter, in which R, G, and B color filter elements are disposed in a checkerboard arrangement, and an imaging device which generates R, G, and B-signals corresponding to the color filter elements. In an interpolation process, the differences between a G-signal of an objective pixel and G-signals of pixels adjacent to the right, left, upper, and lower sides of the objective pixel are checked. For example, if the G-signal of the left side pixel is the closest to that of the objective pixel, a luminance value Y, a color difference signal Cb, and a modified luminance signal YG of the objective pixel are obtained using the R, G, and B-signals of the left side pixel. A B-signal of the objective pixel is obtained using the modified luminance value YG, and the color difference signal Cb.
摘要:
An image compression apparatus transforms original image data partitioned into first blocks, each of which is composed of a plurality of pixels, to reduced-image data composed of a smaller number of pixels than that of the original image data. Further, the apparatus generates expanded-image data from the reduced-image data by fluency transform. Based on the expanded-image data and the original image data, differential value data is obtained, and the differential value is transformed to differential DCT coefficient data by DCT processing. Based on the differential DCT coefficient data, a code-length corresponding to a bit-length necessary for a Huffman coding is calculated. The fluency transform has a plurality of modes, each mode being selected in order, the code-length being calculated for all of the modes. Then, a mode which makes the code-length minimum is determined as the optimum mode. The differential DCT coefficient data is Huffman encoded, so that Huffman-encoded bit data is generated. Then, in an image expansion apparatus, the original image data is restored on using the optimum mode, reduced-image data and the Huffman-encoded bit data.
摘要:
An image compression device to compress a still image comprises a DCT processing circuit, a quantization processing circuit, a bit separation processing circuit, a grouping circuit, and an encoding processing circuit. In the bit separation processing circuit, quantized DCT coefficients are subjected to a bit separation processing, such that higher-rank quantized DCT coefficients and lower-rank quantized DCT coefficients are obtained. Thus, a total bit number (length) of compressed image data is decreased. An image expansion device to expand the compressed image data comprises a decoding processing circuit, an inverse grouping circuit, a bit synthesis processing circuit, a dequantization processing circuit, and an IDCT processing circuit. In the bit synthesis processing circuit, the higher-rank quantized DCT coefficients and the lower-rank quantized DCT coefficients are subjected to a bit synthesis processing, such that the quantized DCT coefficients are obtained. Thus, the original still image data is reproduced.
摘要:
A lens having color correction data includes a memory in which the color correction data necessary to make the color of an image of an object to be recorded, formed by the lens, coincident with the color of the object perceived through the naked eye is stored.
摘要:
An image signal compressing device having a spatial frequency data amount setting unit and a quantization table generation unit. A set data amount is set in the spatial frequency data amount setting unit for each of a plurality of spatial frequencies based on a preset total data amount and a discrete cosine transformation (DCT) data statistical amount corresponding to quantized DCT coefficients using a quantization table in which all quantization coefficients are "1". An amount of encoded data obtained using a predetermined quantization coefficient is estimated in the quantization table generation unit. The predetermined quantization coefficient is adopted as a resultant quantization coefficient of the quantization table when the estimated data is not greater than the set data amount set in the spatial frequency data amount setting unit.