VIDEO CAPTURE DEVICES AND METHODS

摘要

Embodiments provide a video camera that can be configured to highly compress video data in a visually lossless manner. The camera can be configured to transform blue and red image data in a manner that enhances the compressibility of the data. The data can then be compressed and stored in this form. This allows a user to reconstruct the red and blue data to obtain the original raw data for a modified version of the original raw data that is visually lossless when demosaiced. Additionally, the data can be processed in a manner in which the green image elements are demosaiced first and then the red and blue elements are reconstructed based on values of the demosaiced green image elements.

主权项

1. A video camera capable of storing compressed image data to a memory device, decompressing and demosaicing the compressed image data to generate video output, and outputting the video output to a display for presentation, the video camera comprising:
a housing configured to support a memory device; an image sensor disposed in the housing and comprising first, second, and third pluralities of light sensitive devices intermingled with respect to one another, the first plurality of light sensitive devices being configured to detect a first color of light, the second plurality of light sensitive devices being configured to detect a second color of light different from the first color, the third plurality of light sensitive devices being configured to detect a third color of light different from the first and second colors, wherein the image sensor is configured to generate raw mosaiced image data from light entering the housing and output the raw mosaiced image data at a frame rate of at least about 23 frames per second, the raw mosaiced image data having a resolution per frame of at least 2 k and comprising one sensor data value per frame for each of the first, second, and third pluralities of light sensitive devices; and electronics in the housing and in communication with the image sensor, the electronics being configured to:
process the raw mosaiced image data to generate processed image data, the processed image data comprising less than three processed data values per frame for each of the first, second, and third pluralities of light sensitive devices,compress the processed image data with mathematically lossy compression to generate compressed image data,store the compressed image data to the memory device at a frame rate of at least about 23 frames per second,decompress and demosaic the compressed image data as part of an image processing to generate video output having a resolution of at least 2 k per frame, andoutput the video output to a display at a frame rate of at least about 23 frames per second for presentation on the display.