Embodiments provide a video camera configured to capture, compress, and store video image data in a memory of the video camera at a rate of at least about twenty three frames per second. The video image data can be mosaiced image data, and the compressed, mosaiced image data may remain substantially visually lossless upon decompression and demosaicing.
1. A video camera comprising:
a portable housing having at least one handle configured to allow a user to manipulate the orientation with respect to at least one degree of movement of the portable housing during a video recording operation of the camera;
an optics socket supported by the portable housing and having an opening through which light emanating from outside the portable housing enters the portable housing;
an image sensor within the portable housing, configured to convert, at a frame rate of at least twenty three frames per second, light passing through the opening of the optics socket into mosaiced image data that has a horizontal resolution of at least 4 k;
a memory recorder comprising one or more memory devices and removably mounted to an exterior of the portable housing, the one or more memory devices configured to store video image data; and
an image processing system configured to compress the mosaiced image data and store the compressed, mosaiced image data in the memory recorder at a rate of at least twenty three frames per second, wherein
the compressed, mosaiced image data remains substantially visually lossless upon decompression and demosaicing, and
the memory recorder has the capacity to store compressed, mosaiced image data compressed at a compression ratio of about 6:1 and corresponding to at least about 30 minutes of video at 12 mega pixel resolution, 12-bit color resolution, and at 60 frames per second.
2. The video camera of claim 1 , wherein the image processing system is configured to compress the mosaiced image data at a compression ratio of about 6:1 or greater.
3. The video camera of claim 1 , wherein the image processing system is configured to compress the mosaiced image data at a compression ratio of about 7:1 or greater.
4. The video camera of claim 1 , wherein the image processing system is configured to compress the mosaiced image data at a compression ratio of about 8:1 or greater.
5. The video camera of claim 1 , wherein the image processing system is configured to compress the mosaiced image data at a compression ratio of about 12:1 or greater.
6. The video camera of claim 1 , wherein the image processing system is further configured to:
access the stored compressed, mosaiced image data from the memory recorder;
decompress and demosaic the accessed image data; and
output the decompressed and demosaiced image data for display on a monitoring device.
7. The video camera of claim 6 , wherein the monitoring device comprises a display supported by the portable housing.
8. The video camera of claim 6 , wherein the monitoring device comprises a display connected to the video camera by a cable.
9. The video camera of claim 1 , wherein the video camera is configured to operate in a plurality of modes and, in at least one of the modes:
the image sensor is configured to convert, at a frame rate of 30 frames per second or greater, the light passing through the opening of the optics socket into mosaiced image data that has a horizontal resolution of at least 4 k, and
the image processing system is configured to store the compressed, mosaiced image data in the memory recorder at a rate of 30 frames per second or greater.
10. The video camera of claim 1 , wherein the video camera is configured to operate in a plurality of modes and, in at least one of the modes:
the image sensor is configured to convert, at a frame rate of 60 frames per second or greater, the light passing through the opening of the optics socket into mosaiced image data that has a horizontal resolution of at least 4 k, and
the image processing system is configured to store the compressed, mosaiced image data in the memory recorder at a rate of 60 frames per second or greater.
11. The video camera of claim 1 , wherein the video camera is configured to operate in a plurality of modes and, in at least one of the modes:
the image sensor is configured to convert, at a frame rate of 120 frames per second or greater, the light passing through the opening of the optics socket into mosaiced image data that has a horizontal resolution of at least 4 k, and
the image processing system is configured to store the compressed, mosaiced image data in the memory recorder at a rate of 120 frames per second or greater.
12. The video camera of claim 1 , wherein the video camera is configured to operate in a plurality of modes and, in at least one of the modes:
the image sensor is configured to convert, at a frame rate of 60 frames per second, the light passing through the opening of the optics socket into mosaiced image data that has a horizontal resolution of at least 4 k; and
the image processing system is configured to store in the memory recorder compressed, mosaiced image data corresponding to at least about 30 minutes of video at 60 frames per second.
13. The video camera of claim 12 , wherein, in the at least one of the modes, the image processing system is configured to compress the mosaiced image data at a compression ratio of about 6:1 and store in the memory recorder, compressed, mosaiced image data corresponding to at least about 30 minutes of video at 12 mega pixel resolution, 12-bit color resolution, at 60 frames per second.
14. The video camera of claim 1 , further comprising a user interface that allows a user to input commands that cause the image processing system to change a compression ratio at which the mosaiced image data is compressed.
15. The video camera of claim 1 , further comprising a separate compression chip that performs the compression.
16. The video camera of claim 15 , wherein the compression chip resides within the portable housing.
17. The video camera of claim 1 , wherein the image processing system performs a wavelet-based compression technique.
18. The video camera of claim 17 , wherein the image processing system performs a wavelet-based compression technique in accordance with the JPEG 2000 standard.
19. The video camera of claim 1 , wherein the image sensor comprises a CMOS device having a horizontal resolution of 4000 or more pixels and having a size of at least about 1.0 inches.
20. The video camera of claim 1 , further comprising a color filter array configured to provide mosaiced light incident on the image sensor.
21. The video camera of claim 1 , wherein the image processing system is configured to apply a pre-emphasis function to the image data prior to compression.
22. The video camera of claim 21 , wherein the pre-emphasis function comprises a curve in the form y=(x+c)^g, where 0.01<g<1 and c is an offset.
23. The video camera of claim 21 , wherein the pre-emphasis function comprises a curve in the form y=A*log(B*x+C), where A, B, and C are constants.
24. The video camera of claim 1 , wherein the compressed, mosaiced image data comprises compressed raw image data.
25. A method of recording motion video with a video camera, the method comprising:
guiding light emanating from outside a portable housing of a video camera through an opening of an optics socket supported by the portable housing and onto an image sensor within the portable housing;
converting, at a frame rate of at least about twenty three frames per second, light incident on the image sensor into mosaiced image data that has a horizontal resolution of at least 4 k;
compressing the mosaiced image data into compressed, mosaiced image data; and
recording, at a rate of at least about 23 frames per second, the compressed, mosaiced image data into a memory recorder that comprises one or more memory devices and is removably mounted to an exterior of the portable housing,
wherein the compressed, mosaiced image data remains substantially visually lossless upon decompression and demosaicing,
wherein the memory recorder has the capacity to store compressed, mosaiced image data compressed at a compression ratio of about 6:1 and corresponding to at least about 30 minutes of video at 12 mega pixel resolution, 12-bit color resolution, and at 60 frames per second.
26. The method of claim 25 , wherein said compressing comprises compressing the mosaiced image data at a compression ratio of about 6:1 or greater.
27. The method of claim 25 , wherein said recording comprises recording compressed, mosaiced image data into the memory recorder corresponding to at least 30 minutes of video.
28. The method of claim 25 , further comprising adjusting the compression ratio in response to commands input by a user into a user interface of the camera.
29. The method of claim 25 , wherein said compressing comprises compressing the mosaiced image data using a separate compression chip.
30. The method of claim 25 , wherein the compressed, mosaiced image data comprises compressed raw image data.