新增 images自适应二值化

app/src/main/assets/sample/图片与图色处理/图片处理.js

@@ -1,14 +1,14 @@
 "ui";
 
-var url = "https://www.autojs.org/assets/uploads/profile/3-profileavatar.png";
+var url = "https://www.autojs.org/assets/uploads/files/1540386817060-918021-20160416200702191-185324559.jpg";
 var logo = null;
-var currentImg = null;
 
 ui.layout(
     <vertical>
-        <img id="img" w="150" h="150" url="{{url}}" />
+        <img id="img" w="250" h="250" url="{{url}}" />
         <button id="grayscale" text="灰度化" />
         <button id="binary" text="二值化" />
+        <button id="adaptiveBinary" text="自适应二值化" />
         <button id="hsv" text="RGB转HSV" />
         <button id="blur" text="模糊" />
         <button id="medianBlur" text="中值滤波" />
@@ -19,14 +19,7 @@ ui.layout(
 //把一张图片设置到图片控件中
 function setImage(img) {
     ui.run(() => {
-        var curImg = currentImg;
-        if(oldImg != null){
-            ui.post(()=>{
-                oldImg.recycle();
-            });
-        }
         ui.img.setImageBitmap(img.bitmap);
-        currentImg = img;
     });
 }
 
@@ -57,8 +50,21 @@ ui.grayscale.on("click", () => {
 
 ui.binary.on("click", () => {
     processImg(img => {
+        var g = images.grayscale(img);
         //二值化，取灰度为30到200之间的图片
-        return images.threshold(images.grayscale(img), 100, 200);
+        var result = images.threshold(g, 100, 200);
+        g.recycle();
+        return result;
+    });
+});
+
+ui.adaptiveBinary.on("click", () => {
+    processImg(img => {
+        var g = images.grayscale(img);
+        //自适应二值化，最大值为200，块大小为25
+        var result = images.adaptiveThreshold(g, 200, "MEAN_C", "BINARY", 25, 10);
+        g.recycle();
+        return result;
     });
 });
 
@@ -82,6 +88,7 @@ ui.medianBlur.on("click", () => {
         return images.medianBlur(img, 5);
     });
 });
+
 ui.gaussianBlur.on("click", () => {
     processImg(img => {
         //高斯模糊