Image processing method, image processing device and recording medium
An image processing method, an image processing device and a program which can improve sharpness are provided. An image processing device 100 includes a right eye image processing unit 101 that outputs a right eye image displayed to a right eye, a left eye image processing unit 102 that outputs a left eye image displayed to a left eye, and a multi-eye image disparity unit that displays a right eye image and a left eye image to different viewpoint positions. The right eye image processing unit 101 and/or the left eye image processing unit 102 perform correction processing to an input image, and fluctuate at least one of amounts of correction of the right eye image and the left eye image with time.
1. An image processing method comprising:
performing a correction processing to at least one of a right eye image displayed to a right eye and a left eye image displayed to a left eye from a same input image to output the processed images for the right and left eyes,
wherein, the input image is a video image comprising temporally changing frames,
wherein, during the correction processing, with respect to only the right eye image or only the left eye image, an amount of correction for a specific value of luminance before correction is fluctuated with the temporally changing frames,
the amount of correction is equal to a difference of one or two about a luminance value of the right eye image or the left eye image, when a maximum of the luminance value is 255 in a signal of the same input image because the same input image is an eight-bit signal, and
during the correction processing, tone curve correction changing the input image with respect to the luminance is performed, the tone curve comprises a highlight control point and a shadow control point, a luminance of the highlight control point is higher than a luminance of the shadow control point, a correction at the highlight control point is additive, and a correction at the shadow control point is subtractive.
2. An image processing method comprising:
performing a correction processing to at least one of a right eye image displayed to a right eye and a left eye image displayed to a left eye from a same input image to output the processed images for the right and left eyes,
wherein the input image is a video image comprising temporally changing frames,
wherein, during the correction processing, with respect to only the right eye image or only the left eye image, an amount of correction for a specific value of luminance before correction is fluctuated with the temporally changing frames,
a threshold modulation degree G is equal to or larger than 0.01, when the specific value of luminance before correction is B and the amount of correction is ΔB and the threshold modulation degree G is represented as G=ΔB/B,
the amount of correction is equal to a difference of one or two about a luminance value of the right eye image or the left eye image, when a signal of the specific value of luminance is an eight-bit signal, and
during the correction processing, tone curve correction changing the input image with respect to the luminance is performed, the tone curve comprises a highlight control point and a shadow control point, a luminance of the highlight control point is higher than a luminance of the shadow control point, a correction at the highlight control point is additive, and a correction at the shadow control point is subtractive.
3. The image processing method according to claim 2 ,
wherein, during the correction processing, N images are generated from the same input image, the amount of correction being different from each other among the N images,
only the right eye image or only the left eye image from the N images is extracted by using a predetermined rule.
4. The image processing method according to claim 2 , wherein the correction process is performed only on an attention area which is specified in the input image.
5. The image processing method according to claim 2 , wherein a disparity in a horizontal direction is added to one input image.
6. The image processing method according to claim 2 ,
wherein, during the correction processing, tone curve correction changing lightness of a whole image with respect to the luminance is performed.
7. An image processing device comprising:
a right eye image display device that outputs a right eye image displayed to a right eye; and
a left eye image display device that outputs a left eye image displayed to a left eye,
wherein the right eye image display device and/or the left eye image display device perform correction processing to a same input image, wherein, the input image is a video image comprising temporally changing frames and fluctuate an amount of correction for a specific value of luminance before correction with respect to only the right eye image or only the left eye image with the temporally changing frames,
a threshold modulation degree G is equal to or larger than 0.01, when the specific value of luminance before correction is B and the amount of correction is ΔB and the threshold modulation degree G is represented as G=ΔB/B, and
the amount of correction is equal to a difference of one or two about a luminance value of the right eye image or the left eye image, when a signal of the specific value of luminance is an eight-bit signal, and
during the correction processing, tone curve correction changing the input image with respect to the luminance is performed, the tone curve comprises a highlight control point and a shadow control point, a luminance of the highlight control point is higher than a luminance of the shadow control point, a correction at the highlight control point is additive, and a correction at the shadow control point is subtractive.
8. A non-transitory computer readable medium storing a program for causing a computer to execute a predetermined operation, the program comprising:
performing a correction processing to at least one of a right eye image displayed to a right eye and a left eye image displayed to a left eye from an input image to output the processed images,
wherein, the input image is a video image comprising temporally changing frames,
wherein, during the correction processing, with respect to only the right eye image or only the left eye image, an amount of correction for a specific value of luminance before correction is fluctuated with the temporally changing frames, and
a threshold modulation degree G is equal to or larger than 0.01, when the specific value of luminance before correction is B and the amount of correction is ΔB and the threshold modulation degree G is represented as G=ΔB/B,
the amount of correction is equal to a difference of one or two about a luminance value of the right eye image or the left eye image, when a signal of the specific value of luminance is an eight-bit signal, and
during the correction processing, tone curve correction changing the input image with respect to the luminance is performed, the tone curve comprises a highlight control point and a shadow control point, a luminance of the highlight control point is higher than a luminance of the shadow control point, a correction at the highlight control point is additive, and a correction at the shadow control point is subtractive.