为什么我的CS50棕褐色过滤器不计算正确的像素值?
由于某种原因,我的棕褐色代码的数学部分似乎不起作用。运行Check50时会遇到错误,并且将所有像素值显示为太高。我三重检查过滤器的值,但一切似乎都不错。
void sepia(int height, int width, RGBTRIPLE image[height][width])
{
float org_red = 0;
float org_green = 0;
float org_blue = 0;
for (int i = 0; i < height; i++)
{
for (int j = 0; j < width; j++)
{
org_red = image[i][j].rgbtRed;
org_green = image[i][j].rgbtBlue;
org_blue = image[i][j].rgbtGreen;
long sepiaRed = (.393 * org_red + .769 * org_green + .189 * org_blue);
long sepiaGreen = (.349 * org_red) + .686 * org_green + .168 * org_blue;
long sepiaBlue = (.272 * org_red + .534 * org_green + .131 * org_blue);
if (sepiaRed > 255)
{
sepiaRed = 255;
}
if (sepiaGreen > 255)
{
sepiaGreen = 255;
}
if (sepiaBlue > 255)
{
sepiaBlue = 255;
}
image[i][j].rgbtRed = round(sepiaRed);
image[i][j].rgbtGreen = round(sepiaGreen);
image[i][j].rgbtBlue = round(sepiaBlue);
}
}
return;
}
我得到的错误说
:(棕褐色正确过滤单像素 预期的是“ 56 50 39 \ n”,而不是“ 84 75 58 \ n” :(棕褐色正确过滤简单3x3图像 期望“ 100 89 69 \ n100 ...”,而不是“ 100 88 69 \ n100 ...” :(棕褐色正确过滤更复杂的3x3图像 期望“ 25 22 17 \ n66 5 ...”,而不是“ 30 27 21 \ n71 6 ...” :(棕褐色正确过滤4x4图像 期望“ 25 22 17 \ n66 5 ...”,而不是“ 30 27 21 \ n71 6 ...”
for some reason the math portion of my sepia code does not seem to work. I get errors when I run check50, and it shows all the pixel values as being too high. I triple check the values for the filter but all seems good.
void sepia(int height, int width, RGBTRIPLE image[height][width])
{
float org_red = 0;
float org_green = 0;
float org_blue = 0;
for (int i = 0; i < height; i++)
{
for (int j = 0; j < width; j++)
{
org_red = image[i][j].rgbtRed;
org_green = image[i][j].rgbtBlue;
org_blue = image[i][j].rgbtGreen;
long sepiaRed = (.393 * org_red + .769 * org_green + .189 * org_blue);
long sepiaGreen = (.349 * org_red) + .686 * org_green + .168 * org_blue;
long sepiaBlue = (.272 * org_red + .534 * org_green + .131 * org_blue);
if (sepiaRed > 255)
{
sepiaRed = 255;
}
if (sepiaGreen > 255)
{
sepiaGreen = 255;
}
if (sepiaBlue > 255)
{
sepiaBlue = 255;
}
image[i][j].rgbtRed = round(sepiaRed);
image[i][j].rgbtGreen = round(sepiaGreen);
image[i][j].rgbtBlue = round(sepiaBlue);
}
}
return;
}
The error i get says
:( sepia correctly filters single pixel
expected "56 50 39\n", not "84 75 58\n"
:( sepia correctly filters simple 3x3 image
expected "100 89 69\n100...", not "100 88 69\n100..."
:( sepia correctly filters more complex 3x3 image
expected "25 22 17\n66 5...", not "30 27 21\n71 6..."
:( sepia correctly filters 4x4 image
expected "25 22 17\n66 5...", not "30 27 21\n71 6..."
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