DOCS: Spellchecked some words

src/filters.c

@@ -31,8 +31,8 @@ u32_grayscale(const unsigned int clr)
 	unsigned int green = DECODE_G(clr);
 	unsigned int blue = DECODE_B(clr);
 	/*
-	 * WHY: The colors use the REC 601 Standard: Lamens terms they are
-	 * weighed in how the human eye percieves color. So green is the largest
+	 * WHY: The colors use the REC 601 Standard: In layman's terms they are
+	 * weighed in how the human eye perceives color. So green is the largest
 	 * because we are more sensitive to green and least to blue.
 	 * The Shift_8 is to divide 256 to bring the color value back into range
 	 of 0 - 255
@@ -78,7 +78,7 @@ u32_lerp(const unsigned int clr_a, const unsigned int clr_b, const float ratio)
 	/*
 	 * A more powerful mix using floating points to more precisely and
 	 * smoothly mix colors from 2 pixels. Doesn't really work on PPM images
-	 * because they are whole number pixels. So jpeg are better because the
+	 * because they are whole number pixels. So JPEG are better because the
 	 * numbers result in floating point colors.
 	 * */
 	unsigned char blue =
@@ -138,9 +138,9 @@ u32_rotl(const unsigned int clr, const int n)
 	 * Rotating by 2 will wrap and give:
 	 * 0 1 1 1 0 0 0 1 # 1 + 16 + 32 + 64 = 113
 	 *
-	 * This creates a pixelated looking image of random colors while still
-	 * holding the original image's structure under. Almost a distored,
-	 * broken tv look.
+	 * This creates a pixilated looking image of random colors while still
+	 * holding the original image's structure under. Almost a distorted,
+	 * broken TV look.
 	 *
 	 * N has a max of 8 because any number after 8 results in the bits
 	 * shifting negatively due to the wrapping math, which cant happen and
@@ -179,7 +179,7 @@ u32_avg_gb(const unsigned int clr)
  * @brief Blurs column at (x,y) using -radius to radius
  * @details Starts at the top extreme and moves to the bottom extreme,
  * taking the pixel and adding each channel. Because each channel is separated
- * into their own ints, it adds each int together and at the end divides each
+ * into their own int, it adds each int together and at the end divides each
  * channel back below 256 and converts back to one int.
  * @param[in] src Pointer to buffer image.
  * @param[in] x Location in the image buffer for column of original pixel
@@ -219,7 +219,7 @@ blur_col(const unsigned int* src, const int x, const int y, const PPM* img,
  * @brief Blurs column at (x,y) using -radius to radius
  * @details Starts at the left extreme and moves to the right extreme taking the
  * pixel and adding each channel. Because each channel is separated into their
- * own ints, it adds each int together and at the end divides each channel back
+ * own int, it adds each int together and at the end divides each channel back
  * below 256 and converts back to one int.
  * @param[in] src Pointer to buffer image.
  * @param[in] x Location in the image buffer for column of original pixel