docs: document more differences in apis and change default demo image

Author: EscapedGibbon

blog/release.md

@@ -204,6 +204,8 @@ Several methods have been renamed for consistency:
 
 `img.setValue()` ➡️ `img.setValueByIndex()`
 
+`img.setChannel()` ➡️ `img.fillChannel()`
+
 **Other methods**:
 
 `img.getLocalMaxima()` ➡️ `img.getExtrema()`
@@ -234,6 +236,12 @@ Several methods have been renamed for consistency:
 
 `img.monotoneChainConvexHull()` ➡️ `mask.getConvexHull()`
 
+`img.getMin()` & `img.getMax()` ➡️ `img.getMinMax()`
+
+`img.getMean()` ➡️ `img.mean()`
+
+`img.getMedian()` ➡️ `img.median()`
+
 ### Compatibility requirements
 
 - Node.js: 18+ (previously 14+)
@@ -259,6 +267,7 @@ The following deprecated features have been removed:
 - `getClosestCommonParent()` and `getRelativePosition()` have been removed.
 - `getSimilarity()` and `getIntersection()` have been removed.
 - `paintPolygons()` and `paintPolylines()`have been removed. Use [`drawPolygon()`](https://image-js.github.io/image-js/classes/index.Image.html#drawpolygon 'API link on drawPolygon')/ [`drawPolyline()`](https://image-js.github.io/image-js/classes/index.Image.html#drawpolyline 'API link on drawPolyline') + a `for` loop.
+- `getMoment()` has been removed.
 
 #### ROIs and its management
 
@@ -352,6 +361,20 @@ const corrected = image.correctColor(measured, reference);
 
 **Use cases**: Camera calibration, white balance correction, matching images from different devices, scientific imaging standardization.
 
+### `variance()`
+
+A function that calculates image's [variance](https://en.wikipedia.org/wiki/Variance 'wikipedia link on variance') has been added.
+
+```ts
+// Calculate variance for entire image
+const variance = img.variance();
+// Returns: Array of variance values for each channel [R_variance, G_variance, B_variance]
+```
+
+It computes the variance of pixel values for each channel in the image. Variance measures how spread out the pixel values are from the mean - higher variance indicates greater variation in pixel intensities, while lower variance suggests more uniform regions.
+
+**Use cases**: Image quality assessment, texture analysis, noise detection, region comparison.
+
 ### `increaseContrast()`
 
 This function increases image contrast by stretching the pixel value range to use the full available dynamic range.

project-words.txt

@@ -37,3 +37,5 @@ Ssim
 Dssim
 mssim 
 GREYA
+Polylines
+anonymization

src/demo/contexts/demo/defaultImages.ts

@@ -9,8 +9,8 @@ const morphologyMaskUrl =
 export const defaultImages: UrlOption[] = [
   {
     type: 'url',
-    value: `${standardUrl}/lenna.png`,
-    label: 'Lenna',
+    value: `${standardUrl}/mandrill.png`,
+    label: 'Mandrill',
     imageType: 'image',
   },
   {
@@ -25,12 +25,6 @@ export const defaultImages: UrlOption[] = [
     label: 'Standard boat',
     imageType: 'image',
   },
-  {
-    type: 'url',
-    value: `${standardUrl}/mandrill.png`,
-    label: 'Mandrill',
-    imageType: 'image',
-  },
   {
     type: 'url',
     value: `${standardUrl}/peppers.png`,
@@ -43,6 +37,12 @@ export const defaultImages: UrlOption[] = [
     label: 'House',
     imageType: 'image',
   },
+  {
+    type: 'url',
+    value: `${standardUrl}/lenna.png`,
+    label: 'Lenna',
+    imageType: 'image',
+  },
 ];
 
 export const defaultMasks: UrlOption[] = [