diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8d908e32d568abeeec99cfa81838047707a36108..ca09c2b021b411b42bf8cb5a22cdadd4613dca80 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -20,7 +20,7 @@ This changelog aims to follow the guiding principles of
 - Bitwise and.
 - Gaussian Blur for 7x7 kernels.
 - Gaussian Blur for 15x15 kernels.
-- Separable Filter 2D for 5x5 kernels.
+- Separable Filter 2D for 5x5 kernels (not exposed to OpenCV).
 - Enable specifying standard deviation for Gaussian blur.
 - Scale function for float.
 - Add, subtract, multiply & absdiff enabled in OpenCV HAL.
@@ -50,6 +50,7 @@ This changelog aims to follow the guiding principles of
   * sepFilter2D
   * resize
 - Improved performance of Compare Equal and Greater SC API.
+  (Only Compare Greater is exposed to OpenCV.)
 
 ### Removed
 - Support for OpenCV 4.9.
diff --git a/doc/opencv.md b/doc/opencv.md
index ec4befa0c3387cf7513cff7825b5bd351bcac292..6594e967089ffb96edaf61cfd363d382bccbba8c 100644
--- a/doc/opencv.md
+++ b/doc/opencv.md
@@ -115,11 +115,13 @@ Notes on parameters:
 ### [`cv::dilate()`](https://docs.opencv.org/4.10.0/d4/d86/group__imgproc__filter.html#ga4ff0f3318642c4f469d0e11f242f3b6c)
 Notes on parameters:
 * `src.depth()`,`dst.depth()`,`kernel.depth()` - only support `CV_8U` depth.
+* `kernel` - only support kernels where all values equal to 1, and having width and height of at least 5.
 * `borderType` - only supports [`BORDER_CONSTANT`](https://docs.opencv.org/4.10.0/d2/de8/group__core__array.html#gga209f2f4869e304c82d07739337eae7c5aed2e4346047e265c8c5a6d0276dcd838).
 
 ### [`cv::erode()`](https://docs.opencv.org/4.10.0/d4/d86/group__imgproc__filter.html#gaeb1e0c1033e3f6b891a25d0511362aeb)
 Notes on parameters:
 * `src.depth()`,`dst.depth()`,`kernel.depth()` - only support `CV_8U` depth.
+* `kernel` - only support kernels where all values equal to 1, and having width and height of at least 5.
 * `borderType` - only supports [`BORDER_CONSTANT`](https://docs.opencv.org/4.10.0/d2/de8/group__core__array.html#gga209f2f4869e304c82d07739337eae7c5aed2e4346047e265c8c5a6d0276dcd838).
 
 ### [`cv::resize()`](https://docs.opencv.org/4.10.0/da/d54/group__imgproc__transform.html#ga47a974309e9102f5f08231edc7e7529d)