Video camera

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 demosacied. 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 method of compressing digital motion picture image data, comprising:
with a plurality of digital image sensor pixels, generating mosaiced image data for each of a plurality of motion video image frames, the mosaiced image data comprising at least:
first pixel data corresponding to first pixels of the plurality of sensor pixels and that represents light corresponding to a first color; andsecond pixel data corresponding to second pixels of the plurality of sensor pixels and that represents light corresponding to a second color, the second color being different than the first color; pre-emphasizing the mosaiced image data; for each second pixel of a plurality of the second pixels, and based on values of the first pixel data corresponding to two or more of the first pixels, transforming the mosaiced image data at least partly by modifying the second pixel data corresponding to the second pixel, said two or more of the first pixels located on opposite sides of and in the vicinity of the second pixel; subsequent to said transforming and said pre-emphasizing, compressing the pre-emphasized, transformed mosaiced image data to generate compressed mosaiced image data; and storing the compressed mosaiced image data on a memory device at a motion video frame rate of at least 23 frames per second.