Method applyColorQuantization

pixelizer.js:664–683

* 应用颜色量化

()

     * 应用颜色量化
     */
    async applyColorQuantization() {
        if (!this.basePixelCanvas) return;
        
        const colorCount = parseInt(document.getElementById('pixelColorCount').value) || 32;
        const prefilterStrength = parseInt(document.getElementById('prefilterStrength').value) || 30;
        const enableDithering = document.getElementById('enableDithering').checked;
        
        const ctx = this.basePixelCanvas.getContext('2d');
        const imageData = ctx.getImageData(0, 0, this.basePixelCanvas.width, this.basePixelCanvas.height);
        
        // 预滤波去噪
        if (prefilterStrength > 0) {
            this.applyPrefilter(imageData, prefilterStrength / 100);
        }
        
        // 颜色量化
        await this.quantizeColors(imageData, colorCount, enableDithering);
        
        ctx.putImageData(imageData, 0, 0);
    }

    applyPrefilter(imageData, strength) {
        // 简单的双边滤波去除噪点