174results about How to "Brightness value increased" patented technology

An image processing apparatus tone-compresses input luminance values representing luminance values of an input image. The image processing apparatus includes a conversion-curve calculator configured to calculate a conversion curve that is used for tone-compressing luminance values, on the basis of a distribution of the input luminance values; a global-luminance calculator configured to calculate global luminance values representing luminance values of a global-luminance image composed of low-frequency components of the input image; a tone compressor configured to tone-compress the input luminance values and the global luminance values according to the conversion curve; and a contrast corrector configured to correct contrast of a tone-compressed input image composed of the tone-compressed input luminance values, on the basis of a slope of the conversion curve and the tone-compressed global luminance values.

A moving object noise elimination processing device and a moving object noise elimination processing program are provided for making it possible to effectively eliminate a noise due to a moving object in front of a photographing object with a relatively simple method. A moving object noise elimination process involves first photographing an image every predetermined sampling interval Δt and the photographed images are stored in association with time (S10, S12). Next, with respect to the currently photographed image frame data and the previously photographed image frame data, each corresponding pixel brightness value is compared (S14, S16, S18). For each pixel, the one with a higher brightness value is then eliminated as a noise and that with lower brightness value is left (S20). The brightness value in each pixel of the image frame is updated with the left brightness value in each pixel and the updated one is output (S22, S24). Further, a moving object frequency is calculated from a ratio of the total number of data to the number of data with the eliminated brightness values and the calculated one is output (S26, S28).

A calibration method for calibrating a fixed format emissive display device having a plurality of pixels is described In the display each pixel comprises at least three sub-pixels for emitting light of different real primary colours. The method comprises determining, for each real primary colour separately, a virtual target primary colour which can be reached by at least 80% of the pixels of the display, determining a colour gamut defined by the determined virtual target primary colours, and adjusting the drive currents to the sub-pixels to achieve a colour inside the determined colour gamut. A display having an extended range of colours is described, i.e. a gamut of colours that is more than the gamut provided by an n virtual primary colour based electronic multicolour display, as measured on a chromaticity diagram, for example. A color and / or brightness uniform image can be produced with this fixed format emissive display device.

An eye tracking method includes: in a frame of a series of acquired frames, estimating an expected size and expected location of an image of an iris of an eye within that frame; and determining a location of the iris image within that frame by identifying a region within the expected location, the size of the region being consistent with the expected size, pixels of that region being darker than pixels of other such regions within that frame.

The present invention provides a multi-camera images stitching and color homogenizing method, comprising the following steps of: S1, increasing luminance of each image by using Gamma correction; S2, selecting an image that has greatest image information entropy from the images with increased luminance as a reference image, wherein the remaining picture are target images; S3, transforming each image from an RGB color space to a YCbCr color space; S4, adjusting the color and luminance of the target images to be consistent with those of the reference image in the YCbCr color space by using the reference image as a reference; S5, performing a color space inverse transformation on each image, to obtain images that locate in the RGB space. S6, performing stitching on the images by using an image homonymy points matching algorithm, to obtain a preliminary panorama image; and S7, performing contrast enhancement processing on the obtained preliminary panorama image, to obtain a luminance and color balanced panorama image. The multi-camera images stitching and color homogenizing method of the present invention is simple and quick in calculation method, and can be applied to color homogenizing processing of color images.

There is provided an information processing apparatus, including: an image obtaining section configured to obtain a RAW image, the RAW image being taken by an imaging unit, the imaging unit including an image sensor; and a controller configured to cause the imaging unit to preliminarily photograph a preliminary photographing object, and to obtain the RAW image as a first RAW image, to specify a defective pixel of the first RAW image based on the amount of difference between a value of a target pixel and a value of a neighboring pixel around the target pixel, and to create defective position data, to cause the imaging unit to actually photograph an actual photographing object, and to obtain the RAW image as a second RAW image, and to correct a luminance value of the second RAW image based on the defective position data.

The invention provides a method and system for improving an RGBW-image saturation. The method for improving the RGBW-image saturation includes step A; according to an independently adjustable range of screen partition dynamic backlight, dividing the screen into a plurality of screen subareas; step B: partitioning a to-be-displayed RGBW image according to the screen subareas; step C: determining saturation-to-be-adjusted partitions in the partitions of the to-be-displayed RGBW image; and step D: when the to-be-displayed RGBW image is displayed, according to a preset proportion, reducing the backlight luminance of the saturation-to-be-adjusted partitions. The method and system for improving the RGBW-image saturation are capable of realizing refined adjustment of the saturation of the RGBW image.

The invention provides a video-based driver fatigue detection device, which comprises an infrared illumination component, a lens, a filtering component, an image capturing component and an image processing unit, wherein the infrared illumination component is used for providing infrared illumination for the monitored scene; the lens is used for acquiring the infrared optical image signal of the monitored scene; the filtering component is used for carrying out filtering treatment on the received infrared optical image signal of the monitored scene so as to highlight the face and pupils in the infrared optical image signal of the monitored scene; the image capturing component is used for converting the filtered infrared optical image signal into a digital image signal; and the image processing unit is used for extracting eyes and pupils from the acquired digital image and judging whether the driver is tired. By utilizing pupils to judge whether the eyes are open or closed, the video-based driver fatigue detection device of the invention effectively improves the accuracy of judging the open / close state of eyes, and then accurately and rapidly detects whether the driver is tired.

A scene adaptive power control device using a plurality of input images as consecutive input images and controlling a power level of a light source used in displaying the third input image. The scene adaptive power control device including a histogram analysis unit to analyze the second input image and detect a first maximum brightness value of the second input image, a determination unit to detect brightness values matching a first threshold as a predetermined frequency value in the generated histogram and determining a second maximum brightness value, a generation unit generating a power control signal to control the power level of the light source by a value obtained by dividing the second maximum brightness value by the first maximum brightness value, and a compensation unit increasing a brightness of the third input image inversely proportional to the power level of the light source reduced by the power control signal.

A processing unit for an image processing apparatus enables the reduction of background noise or disturbances on a scanned image. The processing unit is arranged to apply an image enhancement method to the luminance image data of the scanned image only and merge the obtained modified luminance image data with additional luminance image data obtained from the chrominance image data so as to recover light shades on the background that may have been removed by the image enhancement method.

Disclosed are methods of processing kaolin to produce ultrafine hydrous kaolin. The methods involve processing gray crude kaolin by subjecting the kaolin crude to flotation and then centrifuging the kaolin to provide a fine stream that is subject to refinement. Also disclosed are systems for the automated processing of gray crude kaolin to produce the ultrafine hydrous kaolin and paint compositions that contain the ultrafine hydrous kaolin.

A color saturation control unit and method for increasing the color saturation of an image is presented. A scaled saturation enhancement factor calculation unit generates a scaled saturation enhancement factor using a base saturation enhancement factor. A multiplier generates a saturation enhanced U chrominance value and a saturation enhanced V chrominance for the current pixel by multiplying the scaled saturation enhancement factor multiplied with the current chrominance values. The ratio of the saturation enhanced chrominance values should be equal to the ratio of the current chrominance values. A lookup table contains tabled saturation enhancement factors that can be used as the scaled saturation enhancement factor when the base saturation enhancement factor would cause the saturation enhanced U chrominance value or the saturation enhanced V chrominance value to exceed a valid range of chrominance values.

A method of enhancing a contrast and an apparatus for enhancing a contrast are provided. The method of enhancing the contrast includes: dividing an image into a plurality of blocks and calculating an average luminance value of each block; interpolating a peripheral luminance value for each input pixel of the image by using the average luminance value; and enhancing the contrast of the input pixel by using the interpolated peripheral luminance value of the input pixel and a unique luminance value of the input pixel.

The invention provides a fingerprint identification method and a mobile terminal. The method comprises the following steps: if a touch operation on the screen of the mobile terminal is detected, identifying the touch area of the touch operation on the screen of the mobile terminal; if a detection result shows that the mobile terminal is under a state that a fingerprint is to be authenticated, controlling the luminance value of the touch area to be greater than or equal to a first preset luminance value, and controlling the luminance value of the display area except the touch area on the screenof the mobile terminal to be smaller than the first preset luminance value; utilizing a fingerprint identification module to collect and identify the fingerprint information of the touch area. Through the fingerprint identification method provided by the invention, the power consumption of the mobile terminal can be lowered while a high fingerprint identification rate is guaranteed, and the endurance time of the mobile terminal is prolonged.

An image processing apparatus includes a hue specifying unit, a pixel extracting unit and a luminance data converting unit. The hue specifying unit generates hue specification information that specifies a hue to be converted on a basis of a user operation. The pixel extracting unit extracts pixels having a hue specified by the hue specification information from a color image on a basis of the hue obtained from chromaticity data. The luminance data converting unit carries out processing on luminance data of pixels extracted in the pixel extracting step using a function which lowers an upper limit value of luminance and increases in a monotone within a predetermined range including the upper limit value to convert the luminance value, so that a monochrome image is generated from the color image.

The invention discloses a method for drying honeysuckles. The method includes placing screened fresh honeysuckles into color-protecting solution; laying the honeysuckles on stainless steel screen cloth after the color-protecting solution on the honeysuckles is drained, and placing the stainless steel screen cloth in a drying chamber of a heat pump drying machine; setting the temperature of the drying chamber at 40-60 DEG C, setting an air speed of the drying chamber at 1-2.5m / s and setting the concentration of oxygen in the drying chamber at 5-21%; filling the drying chamber with nitrogen for 3-5 minutes at intervals of 20-30 minutes in drying procedures, keeping the required concentration of the oxygen in the drying chamber unchanged, and drying the honeysuckles for 6-10 hours to obtain the honeysuckles which are dried by the aid of heat pumps; placing the screen cloth with the honeysuckles into a microwave generator after the honeysuckles are dried by the aid of the heat pumps, and drying the honeysuckles by the aid of microwaves until the moisture contents of the honeysuckles are lower than or equal to 12%; spreading the honeysuckles in cool, clean and ventilation positions to temper the honeysuckles; loading the honeysuckles in compound zip-lock bags, and filling the insides of the bags with nitrogen so that the concentration of oxygen in each bag is lower than or equal to 5%. The drying chamber of the heat pump drying machine is preheated for at least 30 minutes before the stainless steel screen cloth is placed in the drying chamber. The method has the advantages that a manufacturing process is simple, the cost is low, and the quality of products are stable; a brightness value L of the honeysuckles manufactured by the method is larger than 60, the total phenol content of the honeysuckles is higher than 0.5%, a chlorogenic acid loss rate is lower than 20%, and the method has obvious merits, an important application prospect and high popularization utilization value.

Disclosed herein are a method for removing noise by segmenting an image according to a brightness value of the image and / or distribution of pixel data, setting coefficient values of a low pass filter in consideration of characteristics of each image with respect to each segmented image and then filtering each segmented image, and a night vision system including noise removing units using the same disposed before and behind a brightness improving unit, thereby making it possible to remove noise without deteriorating image quality.

The present invention generally relates to a method for changing the color of a textile material to obtain a vintage and / or worn appearance comprising the steps of contacting the fabric textile material with a nitrate salt, activating the nitrate salt by the addition of an acid catalyst until the desired color change is achieved.

An information processing apparatus includes a display device, an input unit, a determining unit and a processing unit. The input unit inputs an event instructing to change display luminance of the display device. The determining unit determines as to which one of a battery and an external power supply drives the apparatus. The processing unit changes the display luminance in a range of a first luminance value to a second luminance value being larger than the first luminance value in accordance with the input event when the determining unit determines that the external power supply drives the apparatus. The processing unit changes the display luminance in a range of a third luminance value to a fourth luminance value being larger than the third luminance value and being smaller than the second luminance value in accordance with the input event when the determining unit determines that the battery drives the apparatus.

An image processing apparatus tone-compresses input luminance values representing luminance values of an input image. The image processing apparatus includes a conversion-curve calculator configured to calculate a conversion curve that is used for tone-compressing luminance values, on the basis of a distribution of the input luminance values; a global-luminance calculator configured to calculate global luminance values representing luminance values of a global-luminance image composed of low-frequency components of the input image; a tone compressor configured to tone-compress the input luminance values and the global luminance values according to the conversion curve; and a contrast corrector configured to correct contrast of a tone-compressed input image composed of the tone-compressed input luminance values, on the basis of a slope of the conversion curve and the tone-compressed global luminance values.

If zoom magnification falls within an optical-zoom application scaling range of zoom magnifications Z1 to Z2, image data that has been enlarged by a zoom lens is recorded on a recording medium. If zoom magnification falls within an electronic-zoom application scaling range of zoom magnifications Z2 to Z3, the image data is subjected to super-resolution processing, super-resolution image data and image data that has not been subjected to super-resolution processing are combined by weighting processing executed such that the higher the zoom magnification, the greater the weight assigned to the super-resolution image data, and the resultant image data is subjected to electronic zoom processing and then recorded. If zoom magnification exceeds Z3, the super-resolution image data is recorded upon being subjected to electronic zoom processing.

An image enhancement unit and method for enhancing the image quality of a video stream is presented. The image enhancement unit combines a contour enhancement unit, a luminance contrast stretching unit, a color transient improvement unit, and a color saturation control unit to enhance both the luminance and chrominance values in the video stream. Specifically, the contour enhancement unit processes the luminance values to improve the contours of the images in the video steam. The luminance contrast stretching unit further improves the luminance by enhancing the contrast in the images. The color transient improvement unit processes the chrominance values to remove blurring around along the edges of color transitions and the color saturation control unit increases the color saturation to improve the appearance of the images.

The invention discloses a green porous near-infrared reflection pigment and a preparation method thereof. The chemical composition is NaZn[1-x](Cr)xPO4, wherein x is 0.10-0.25. The preparation method comprises the following steps; proportionally dissolving a zinc salt and a chromium salt in deionized water, and stirring at room temperature to obtain a zinc-chromium solution; heating the zinc-chromium solution in a water bath, and slowly and dropwisely adding phosphoric acid while stirring, thereby obtaining a zinc-chromium-phosphorus solution; dissolving sodium carbonate or sodium bicarbonate in water to obtain a sodium solution as a precipitant; slowly and dropwisely adding the precipitant into the zinc-chromium-phosphorus solution to regulate the pH value, standing, washing with water, washing with alcohol, and drying to obtain a precursor powder; and putting the precursor in a muffle furnace, calcining, carrying out furnace cooling, and grinding to obtain the green porous near-infrared reflection pigment. The brightness value of the pigment is 60.27-67.34, and the near-infrared sunlight reflectivity is 63.84-69.12%, which are respectively higher than those of the common iron green pigment. Thus, the green porous near-infrared reflection pigment has wide application prospects in the field of solar heat reflective insulation paints.

The invention relates to a backlight system of an integral microstructure, which comprises a light guide plate, a light source and a reflector plate, wherein the light guide plate is provided with a light inlet surface, a light outlet surface and a bottom surface opposite to the light outlet surface, the light source is arranged near the light outlet surface, the reflector plate is arranged near the bottom surface, the light outlet surface of the light guide plate is equipped with a micro-optics light focusing structure, and the reflector plate is equipped with a micro-reflection structure. By means of the above structure, the reflecting surface of the micro-reflection structure of the reflector plate reflects light, a light reflecting field can be focused and modulated via changing the inclination angle of the reflecting surface, and the brightness value in an ideal vision field of the light guide plate can be further increased by engaging with the micro-optics light focusing structure of the light guide plate, thereby avoiding using traditional prism sheets, reducing the number of device elements, realizing high integration of the backlight system, increasing the optical energy usage, and reducing the cost.

A touch window includes a substrate including an active region and an unactive region, a resin layer provided on the substrate. The resin layer includes an intaglio part and an embossment part adjacent to the intaglio part, and an electrode layer in the intaglio part. The embossment part includes a curved surface.

The embodiment of the invention provides a graphics barcode scanning method and device, a mobile terminal and a storage medium. The method comprises the following steps: when detecting an applied codescanning operation, a camera is called to collect target image data containing the graphics barcode; ; counting brightness values of the target image data; if the brightness value does not conform tothe preset brightness condition, adjusting the supplemental brightness of the flash lamp; driving the flash lamp to compensate the graphic bar code according to the compensated brightness to improvethe brightness value of the target image data; transmitting the target image data to the application to scan the graphic bar code. The brightness value of the flash lamp can be dynamically adjusted according to the brightness condition, so as to adapt to the environment and reduce the reflection of the light, thereby improving the clarity of the graphic bar code, avoiding the overall over-exposureor whitening of the graphic bar code, improving the success rate of the code scanning, and further, reducing the frequency of the manual adjustment of the position of the user, and reducing the codescanning time.

A de-interlacing method is applied to a to-be-de-interlaced field including display pixels of display lines and to-be-interpolated pixels of to-be-interpolated lines. First, a corresponding edge-direction value of each of edge pixels in the to-be-de-interlaced field is determined. Next, it is judged whether one of the display pixels near each to-be-interpolated pixel has a corresponding edge-direction value so that a judgement result is obtained. Then, a corresponding edge-direction value of each to-be-interpolated pixel is set according to the corresponding edge-direction values of specific display pixels of the display pixels near the to-be-interpolated pixel if the judgement result is affirmative. Finally, a corresponding display pixel pair of up and down display lines near each to-be-interpolated pixel is selected according to the corresponding edge-direction value of each to-be-interpolated pixel so that a luminance value and a chrominance value of the to-be-interpolated pixel are calculated.

A jobsite-renewable floor finish comprising a film former and an appropriate amount of a lightness-inducing agent provides a translucent hardened finish layer having an increased lightness value (as evaluated in relation to an appropriate color space) and a cleaner appearance than a finish made without such pigment.

The embodiment of the invention provides a method and a system for automatically adjusting screen display parameters, and an intelligent terminal. The corresponding relationship between screen display parameters and time is pre-stored; and during a screen display process, the screen can be controlled in real time to perform display according to the screen display parameters corresponding to the current time. According to the above scheme provided by the embodiment of the invention, no light brightness sensor needs to be arranged for the terminal, the corresponding screen display parameters can be automatically selected according to the current time, and thus, the response rate is quicker. Besides, the terminal does not need to be started in the above scheme, as long as the screen is in a lighted state, the lighted screen display parameters can be controlled according to the current time, and great convenience is brought to the user.