Replace values outside of thresholds with average value.
The operator eliminate_sp replaces all gray values outside the indicated gray value intervals (MinThresh to MaxThresh) with the neighboring mean values. Only those neighboring pixels which also fall within the gray value interval are used for averaging. If no such pixel is present in the vicinity the original gray value is used. The gray values in the input image falling within the gray value interval are also adopted without change.
If even values instead of odd values are given for MaskHeight or MaskWidth, the routine uses the next larger odd values instead (this way the center of the filter mask is always explicitly determined).
|
Image (input_object) |
(multichannel-)image(-array) -> object : byte |
| Input image. | |
|
ImageFillSP (output_object) |
(multichannel-)image(-array) -> object : byte |
| Smoothed image. | |
|
MaskWidth (input_control) |
extent.x -> integer |
| Width of filter mask. | |
| Default value: 3 | |
| Suggested values: 3, 5, 7, 9, 11 | |
| Typical range of values: 3 <= MaskWidth <= 512 (lin) | |
| Minimum increment: 2 | |
|
Recommended increment: 2 | |
| Restriction: odd(MaskWidth) | |
|
MaskHeight (input_control) |
extent.y -> integer |
| Height of filter mask. | |
| Default value: 3 | |
| Suggested values: 3, 5, 7, 9, 11 | |
| Typical range of values: 3 <= MaskHeight <= 512 (lin) | |
| Minimum increment: 2 | |
|
Recommended increment: 2 | |
| Restriction: odd(MaskHeight) | |
|
MinThresh (input_control) |
integer -> integer |
| Minimum gray value. | |
| Default value: 1 | |
| Suggested values: 1, 5, 7, 9, 11, 15, 23, 31, 43, 61, 101 | |
| Typical range of values: 0 <= MinThresh <= 254 (lin) | |
| Minimum increment: 1 | |
|
Recommended increment: 1 | |
|
MaxThresh (input_control) |
integer -> integer |
| Maximum gray value. | |
| Default value: 254 | |
| Suggested values: 5, 7, 9, 11, 15, 23, 31, 43, 61, 101, 200, 230, 250, 254 | |
| Typical range of values: 1 <= MaxThresh <= 255 (lin) | |
| Minimum increment: 1 | |
|
Recommended increment: 1 | |
| Restriction: MinThresh <= MaxThresh | |
read_image(Image,'meer_rot') disp_image(Image,WindowHandle) eliminate_sp(Image,ImageMeansp,3,3,101,201) disp_image(ImageMeansp,WindowHandle).
eliminate_sp is reentrant and automatically parallelized (on tuple level, channel level, domain level).
mean_sp, mean_image, median_image, eliminate_min_max
gauss_image, smooth_image, anisotrope_diff, sigma_image, eliminate_min_max
Image filters
