Abstract: A multi-layer low-pass filter is used to filter a first frame of video data representing at least a portion of an environment of an individual. A first layer of the filter has a first filtering resolution setting for a first subset of the first frame, while a second layer of the filter has a second filtering resolution setting for a second subset. The first subset includes a data element positioned along a direction of a gaze of the individual, and the second subset of the frame surrounds the first subset. A result of the filtering is compressed and transmitted via a network to a video processing engine configured to generate a modified visual representation of the environment.

Abstract: An electronic device may include a display and control circuitry that operates the display. The control circuitry may be configured to daltonize input images to produce daltonized output images that allow a user with color vision deficiency to see a range of detail that the user would otherwise miss. The daltonization algorithm that the control circuitry applies to input images may be specific to the type of color vision deficiency that the user has. The daltonization strength that the control circuitry applies to the image or portions of the image may vary based on image content. For example, natural images may be daltonized with a lower daltonization strength than web browsing content, which ensures that memory colors such as blue sky and green grass do not appear unnatural to the user while still allowing important details such as hyperlinks and highlighted text to be distinguishable.

Abstract: An electronic device may include a display and control circuitry that operates the display. The control circuitry may be configured to daltonize input images to produce daltonized output images that allow a user with color vision deficiency to see a range of detail that the user would otherwise miss. The daltonization algorithm may be specific to the type and severity of color vision deficiency that the user has. The control circuitry may conduct a color vision assessment using the display. The color vision assessment may include a sequence of test images that are each displayed for a predetermined period of time before moving to the next test image in the sequence. Each test image may include a color patch on a neutral background. A predetermined number of severity levels for each type of color vision deficiency may be tested during the color vision assessment.

Abstract: The present invention discloses a method for synthesizing 25-hydroxy cholesterol. The method is as below: subjecting 24-dehydrocholesterol derivative as a raw material, which undergoes an addition reaction with a hydroxyl containing reagent in an organic solvent under catalysis, and then hydrolyzing the reaction product and separating to obtain 25-hydroxy cholesterol. The present invention adopts hydroxyl containing reagents such as water, formic acid, acetic acid, propionic acid, butyric acid, benzoic acid, p-methyl benzoic acid to replace the commonly used extremely toxic reagents such as Cr reagent, Hg reagent and polyfluorinated acetone in the prior art. The raw materials of the present invention are easily available, and have low effect on environment. The operation and post treatment are convenient.

Abstract: An electronic device may include a display and control circuitry that operates the display. The control circuitry may be configured to daltonize input images to produce daltonized output images that allow a user with color vision deficiency to see a range of detail that the user would otherwise miss. The daltonization algorithm that the control circuitry applies to input images may be specific to the type of color vision deficiency that the user has. The daltonization strength that the control circuitry applies to the image or portions of the image may vary based on image content. For example, natural images may be daltonized with a lower daltonization strength than web browsing content, which ensures that memory colors such as blue sky and green grass do not appear unnatural to the user while still allowing important details such as hyperlinks and highlighted text to be distinguishable.

Abstract: The present invention discloses a method for synthesizing 25-hydroxy cholesterol. The method is as below: subjecting 24-dehydrocholesterol derivative as a raw material, which undergoes an addition reaction with a hydroxyl containing reagent in an organic solvent under catalysis, and then hydrolyzing the reaction product and separating to obtain 25-hydroxy cholesterol. The present invention adopts hydroxyl containing reagents such as water, formic acid, acetic acid, propionic acid, butyric acid, benzoic acid, p-methyl benzoic acid to replace the commonly used extremely toxic reagents such as Cr reagent, Hg reagent and polyfluorinated acetone in the prior art. The raw materials of the present invention are easily available, and have low effect on environment. The operation and post treatment are convenient.