c*i
发帖数: 348 | 1 To be completed in any language
Write a function called enlargeImage which takes as parameters an array of
unsigned 8-bit integers, a width, a height and a scaling ratio. The function
should return an array of unsigned 8-bit integers. In C, the function
signature would look as follows:
unsigned char *enlargeImage(const unsigned char *pixels, const int width,
const int height, const float scalingRatio);
The input and output arrays contain the pixel values for the Y plane of a
YUV image.
The function should enlarge the image by a factor scalingRatio, using
whatever techniques you would like to use to generate the highest quality
output image. You may assume scalingRatio is >= 1.0 and scalingRatio <= 2.0.
If scalingRatio is 1.0, your output should match your input. Aside from the
1.0 case, your function should be optimized to run fastest when
scalingRatio == 2.0. | c****p
发帖数: 6474 | 2 ==2.0的时候直接右移吧，省了double型乘法了
function
【在 c*i 的大作中提到】
: To be completed in any language
: Write a function called enlargeImage which takes as parameters an array of
: unsigned 8-bit integers, a width, a height and a scaling ratio. The function
: should return an array of unsigned 8-bit integers. In C, the function
: signature would look as follows:
: unsigned char *enlargeImage(const unsigned char *pixels, const int width,
: const int height, const float scalingRatio);
: The input and output arrays contain the pixel values for the Y plane of a
: YUV image.
: The function should enlarge the image by a factor scalingRatio, using
| f*******y
发帖数: 1148 | 3 用金字塔算法？
function
【在 c*i 的大作中提到】
: To be completed in any language
: Write a function called enlargeImage which takes as parameters an array of
: unsigned 8-bit integers, a width, a height and a scaling ratio. The function
: should return an array of unsigned 8-bit integers. In C, the function
: signature would look as follows:
: unsigned char *enlargeImage(const unsigned char *pixels, const int width,
: const int height, const float scalingRatio);
: The input and output arrays contain the pixel values for the Y plane of a
: YUV image.
: The function should enlarge the image by a factor scalingRatio, using
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