摘要:
Due to an accumulated error from the pair-wise registration, the stitched image may be blurred or have a gap when a loop is encountered. In order to remove the accumulated error, we identify a closed loop where a first image frame overlaps with a second image frame, the second image frame being captured earlier in a scanning sequence than the first image frame; register the first image frame with the second image frame; and apply a global optimization to adjust registration parameters for the plurality of pair-wise registrations of image frames within the closed loop using global constraints.
摘要:
Methods and systems for classifying human motion as corresponding to an activity are disclosed. One example method includes sensing motion characteristics associated with the activity to generate a first set of data, identifying a cycle interval in the first set of data; and identifying the activity based on the interval.
摘要:
A nanocomposite particle, its use as a catalyst, and a method of making it are disclosed. The nanocomposite particle comprises titanium dioxide nanoparticles, metal oxide nanoparticles, and a surface stabilizer. The metal oxide nanoparticles are formed hydrothermally in the presence of the titanium dioxide nanoparticles. The nanocomposite particle is an effective catalyst support, particularly for DeNOx catalyst applications.
摘要:
A catalyst comprising a spray-dried transition metal zeolite and a noble metal is disclosed. The spray-dried transition metal zeolite comprises a transition metal zeolite and a binder. At least 50 wt. % of the binder is titania. The catalyst is used in a process to produce an epoxide by reacting an olefin, hydrogen, and oxygen. The catalyst is easy to filter from a slurry and produces a reduced level of hydrogenation products.
摘要:
A method of correcting an underexposed digital image comprises determining the stop of underexposure at which the digital image was captured, correcting for one integer stop of underexposure iteratively until the amount of underexposure correction is equal to the integer component of the determined stop of underexposure and correcting for any remaining fractional component of the determined stop of underexposure.
摘要:
A catalyst comprising iron and a titanium-zirconium mixed oxide gel, and a process for preparing the catalyst are disclosed. The process comprises combining an iron compound and a titanium-zirconium mixed oxide gel in water to form an iron-titanium-zirconium mixed oxide, and then removing water to produce the catalyst. The catalyst is particularly effective for DeNOx applications, demonstrating high activity and good thermal stability.
摘要:
Methods for estimating a point spread function of a blurred digital image. One example method includes capturing gyro data during an image exposure time, deriving gyro samples from the gyro data at predetermined gyro sampling times, calculating a motion vector field of the image at each gyro sampling time, approximating an overall image scene motion path by averaging motion paths of selected pixels in the image, and estimating the point spread function from the approximated overall image scene motion path.
摘要:
The present invention is directed to high activity titanium oxide DeNOx catalysts. In preferred embodiments, by depositing vanadium oxide on a titania supported metal oxide such as tungsten oxide, an improved catalyst may be generated. This catalyst may be used in the treatment of exhaust from sources such as automobiles and industrial plants.
摘要:
TiO2 nanoparticles having improved consistent particle morphology, uniform particle size, and which contain uniform intra-particle pores in the mesopore size range are produced by wet chemical hydrolysis.
摘要:
Disclosed are methods, devices, and computer program products for image noise reduction. In one example embodiment, a method for reducing noise in a digital image includes several acts. First, one or more objects are identified in an input image. Next, the input image or a portion thereof is processed to produce another image, which may be a blurred version of the input image. Finally, one or more objects in the processed image that correspond to the one or more objects identified in the input image are evaluated to determine whether to discard the one or more objects identified in the input image. For example, if an amount of energy preserved in an object after blurring is less than a threshold, the object may be discarded as noise.