Anamorphic three-perforation imaging system
An anamorphic imaging system is disclosed which maximizes the use of available image area to minimize display magnification and image degradation due to display magnification, reduces the amount of anamorphic squeeze or stretch during photography to lower image degradation due to anamorphosis, and in film applications, utilizes a film frame that is only three perforations in height to reduce the amount of original film needed. The frame for either film or digital applications has an aspect ratio of approximately 16:9, is contained within the total available frame area of a three-perforation frame or digital imager, and is sized to maximize image area. In preferred embodiments, the image capture area is approximately 0.900 inches wide by approximately 0.506 inches tall.
1. A method for capturing a standard television image during original photography when an image capture aspect ratio differs from a display aspect ratio such that an image quality of the image is maximized, comprising:
choosing an anamorphic ratio of a taking lens during original photography to be approximately the image capture aspect ratio divided by the display aspect ratio;
vertically squeezing or horizontally stretching the standard television image using the taking lens; and
capturing the image in a frame sized to utilize as much of a total available frame area as possible;
wherein the image capture aspect ratio is selected to be equivalent to a 16:9 aspect ratio of a digital imager.
2. The method as recited in claim 1 , the total available frame area having a height equivalent to not more than the height of three perforations in film having regular perforations on a left and right side of the film and a width equivalent to not more than a distance between the perforations on the left and right side of the film.
3. The method as recited in claim 2 , further comprising choosing the anamorphic ratio to be approximately 1.34:1.
4. The method as recited in claim 1 , further comprising selecting the anamorphic ratio and sizing the frame to provide an image capture area of approximately 0.900 inches wide by approximately 0.506 inches tall.
5. A method for generating a digital image suitable for display in a digital cinema projector from images captured according to the method of claim 1 , the digital cinema projector including a projection chip having a display area, the method comprising:
magnifying or minifying the captured image as needed using digital processing techniques to produce a digital image that utilizes as much of the total availablearea of the display area as possible.
6. A method for generating a digital image suitable for display in a digital cinema projector from images captured according to the method of claim 1 , the digital cinema projector including a projection chip having a display area, the method comprising:
magnifying, minifying, stretching or squeezing the captured image as needed using digital processing techniques to produce a digital image that utilizes the entire display area.
7. A method for generating a digital image suitable for display in a digital application from images captured according to the method of claim 1 , the method comprising:
vertically stretching the captured image by about 34% to produce an intermediate image; and
magnifying or minifying the intermediate image as needed using digital processing techniques to produce a digital image suitable for the digital application.
8. A method for generating a digital image suitable for display in a digital application from images captured according to the method of claim 1 , the method comprising:
horizontally squeezing the captured image by about 34% to produce an intermediate image; and
magnifying or minifying the intermediate image as needed using digital processing techniques to produce a digital image suitable for the digital application.
9. An anamorphic imaging system for capturing a standard television image, comprising:
a detector for capturing the standard television image; and
an anamorphic lens for vertically squeezing or horizontally stretching the standard television image into an image capture area that fits within the detector;
wherein the anamorphic lens has a vertical squeeze or horizontal stretch ratio chosen to maximize the image capture area and image quality by utilizing as much of the detector as possible while maintaining an aspect ratio of about 16:9.
10. The anamorphic imaging system as recited in claim 9 , the detector having a height equivalent to not more than the height of three perforations in film having regular perforations on a left and right side of the film and a width equivalent to not more than a distance between the perforations on the left and right side of the film.
11. The anamorphic imaging system as recited in claim 9 , wherein the anamorphic lens has a vertical squeeze or horizontal stretch of approximately 1.34:1.
12. The anamorphic imaging system as recited in claim 9 , wherein the anamorphic lens has a vertical squeeze or horizontal stretch selected to enable the image capture area to fit within the dimensions of a digital imager.
13. The anamorphic imaging system of claim 9 , further comprising:
a digital image processor for generating a digital image from the captured standard television image, the digital image suitable for display in a digital cinema projector including a projection chip having a display area, the digital image processor programmed for
magnifying or minifying the captured image as needed using digital processing techniques to produce a digital image that utilizes as much of the display area as possible.
14. The anamorphic imaging system of claim 9 , further comprising:
a digital image processor for generating a digital image from the captured standard television image, the digital image suitable for display in a digital cinema projector including a projection chip having a display area, the digital image processor programmed for
magnifying, minifying, stretching or squeezing the captured image as needed using digital processing techniques to produce a digital image that utilizes the entire display area.
15. The anamorphic imaging system of claim 9 , further comprising:
a digital image processor for generating a digital image from the captured standard television image, the digital image suitable for display in a digital application, the digital image processor programmed for
vertically stretching the captured image by about 34% to produce an intermediate image, and
magnifying or minifying the intermediate image as needed using digital processing techniques to produce a digital image suitable for the digital application.
16. The anamorphic imaging system of claim 9 , further comprising:
a digital image processor for generating a digital image from the captured standard television image, the digital image suitable for display in a digital application, the digital image processor programmed for
horizontally squeezing the captured image by about 34% to produce an intermediate image, and
magnifying or minifying the intermediate image as needed using digital processing techniques to produce a digital image suitable for the digital application.
17. A method for capturing a widescreen image during original photography when an image capture aspect ratio differs from a display aspect ratio such that an image quality of the image is maximized, and generating a release print image from the captured widescreen image, comprising:
choosing an anamorphic ratio of a taking lens during original photography to be approximately the display aspect ratio divided by the image capture aspect ratio;
capturing the image in a frame sized to utilize as much of a total available frame area as possible;
vertically stretching or horizontally squeezing the captured image utilizing digital processing techniques to produce an intermediate image; and
resampling the intermediate image both horizontally and vertically using digital processing techniques to generate the release print image;
wherein the image capture aspect ratio is selected to be equivalent to a 16:9 aspect ratio of a digital imager.
18. The method as recited in claim 17 , further comprising:
stretching the captured image by about 49% in a vertical direction to produce the intermediate image; and
resampling the intermediate image by about 9.3% in both the horizontal and vertical directions.
19. The method as recited in claim 17 , further comprising:
squeezing the image by about 49% in the horizontal direction to produce the intermediate image; and
resampling the intermediate image by about 36.4% in both the horizontal and vertical directions.