update README

README.md

@@ -37,6 +37,12 @@ English | [简体中文](README_CN.md)
 - **1080p resolution**: Only supports 8-second duration for Veo 3.1 models
 - **First-last frame interpolation**: Only available for Veo 3.1 models with 8-second duration
 
+### Watermark Removal
+- Automatically detects and removes Gemini watermarks from generated images
+- Supports both 48×48 and 96×96 watermark sizes
+- Uses reverse alpha blending algorithm for clean removal
+- Simple one-click operation - just pass the image through the node
+
 ## Installation
 
 1. Clone or download this repository to your ComfyUI custom_nodes directory:
@@ -261,8 +267,45 @@ For issues and feature requests, please visit the [GitHub repository](https://gi
 - **1080p resolution** is only supported with **8-second duration** for Veo 3.1 models
 - **First-last frame interpolation** requires **Veo 3.1 models** and **8-second duration only**
 
+## Watermark Remover Node Usage
+
+### Node: JM Gemini Watermark Remover
+
+This node removes the Gemini watermark that appears on generated images.
+
+#### Input:
+- **image**: The Gemini-generated image with watermark (IMAGE tensor)
+
+#### Output:
+- **image**: The same image with watermark removed (IMAGE tensor)
+
+#### Usage:
+
+1. Add "JM Gemini Watermark Remover" node to your workflow
+2. Connect the output from "JM Gemini Image Generator" (or any Load Image node with a Gemini image) to the image input
+3. Connect the output to Preview Image or Save Image node
+4. Run the workflow
+
+The node will:
+- Automatically detect the watermark size (48×48 or 96×96) based on image dimensions
+- Calculate the watermark position (bottom-right corner)
+- Remove the watermark using reverse alpha blending algorithm
+- Save the cleaned image to the ComfyUI output directory
+
+**How it works:**
+- Gemini adds watermarks to images larger than 512×512 pixels
+- Images larger than 1024×1024 use a 96×96 watermark
+- Smaller images use a 48×48 watermark
+- The node uses pre-calculated alpha maps from background captures to reverse the watermark blending
+
 ## Changelog
 
+### Version 1.2.0
+- Added JM Gemini Watermark Remover node
+- Automatically removes Gemini watermarks from generated images
+- Supports both 48×48 and 96×96 watermark sizes
+- Uses reverse alpha blending algorithm for clean removal
+
 ### Version 1.1.0
 - Added video generation support with JM Gemini Video Generator node
 - Support for Veo 3.1 and Veo 3.0 models

README_CN.md

@@ -37,6 +37,12 @@
 - **1080p分辨率**：Veo 3.1 模型的1080p分辨率仅支持8秒时长
 - **首尾帧插值**：仅支持Veo 3.1模型，且时长只能为8秒
 
+### 水印去除
+- 自动检测并去除Gemini生成图像上的水印
+- 支持48×48和96×96两种水印尺寸
+- 使用反向alpha混合算法实现干净去除
+- 简单的一键操作 - 只需将图像传递给节点即可
+
 ## 安装说明
 
 ### 1. 克隆或下载仓库
@@ -311,8 +317,45 @@ MIT License
 - **1080p分辨率**仅支持**8秒时长**（Veo 3.1模型）
 - **首尾帧插值**功能仅支持**Veo 3.1模型**，且**时长只能为8秒**
 
+## 水印去除节点使用说明
+
+### 节点：JM Gemini Watermark Remover（JM Gemini水印去除器）
+
+该节点用于去除Gemini生成图像上显示的水印。
+
+#### 输入：
+- **image**：带有水印的Gemini生成图像（IMAGE tensor格式）
+
+#### 输出：
+- **image**：去除水印后的图像（IMAGE tensor格式）
+
+#### 使用方法：
+
+1. 在工作流中添加"JM Gemini Watermark Remover"节点
+2. 将"JM Gemini Image Generator"的输出（或任何包含Gemini图像的Load Image节点）连接到image输入
+3. 将输出连接到Preview Image或Save Image节点
+4. 运行工作流
+
+节点将会：
+- 根据图像尺寸自动检测水印大小（48×48或96×96）
+- 计算水印位置（右下角）
+- 使用反向alpha混合算法去除水印
+- 将处理后的图像保存到ComfyUI的output目录
+
+**工作原理：**
+- Gemini会为大于512×512像素的图像添加水印
+- 大于1024×1024的图像使用96×96水印
+- 较小的图像使用48×48水印
+- 节点使用从背景捕获预计算的alpha映射来反向混合水印
+
 ## 更新日志
 
+### 版本 1.2.0
+- 新增JM Gemini Watermark Remover水印去除节点
+- 自动去除Gemini生成图像上的水印
+- 支持48×48和96×96两种水印尺寸
+- 使用反向alpha混合算法实现干净去除
+
 ### 版本 1.1.0
 - 新增视频生成功能，添加JM Gemini Video Generator节点
 - 支持Veo 3.1和Veo 3.0模型