Implement three key problems solutions for grid rendering
1. Problem 1 - Y-coordinate based row calculation: - Use Math.round(yCenter / cellHeight) instead of sequential filling - Each character placed at correct row based on actual position 2. Problem 2 - Empty column detection: - Implement detectEmptyColumns() method - Calculate standard column gap and detect large gaps - Map physical columns to grid columns accounting for empty columns 3. Problem 3 - Multi-column alignment baseline: - Add findTopMostY() helper method - Find reference baseline across all columns - (Currently simplified, can be optimized later) 4. Fix double-line small character pairing: - Use line_id sequence instead of x-coordinate splitting - First line_id = right column, second = left column - Pair by index after sorting by y-coordinate 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
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@ -115,26 +115,26 @@ export class GridRenderer {
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* 处理单个物理列
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*/
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processPhysicalColumn(logicalCols) {
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// 合并所有字符
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let allChars = [];
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for (const lc of logicalCols) {
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allChars = allChars.concat(lc.chars);
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}
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// 分离大字和小字
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const bigChars = allChars.filter(c => !c.isSmall);
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const smallChars = allChars.filter(c => c.isSmall);
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// 处理双行小字配对
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let smallPairs = [];
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if (smallChars.length > 0) {
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smallPairs = this.pairSmallChars(smallChars);
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const smallPairs = this.pairSmallChars(logicalCols);
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// 收集大字
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const bigChars = [];
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for (const lc of logicalCols) {
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if (!lc.isAllSmall) {
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bigChars.push(...lc.chars);
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}
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}
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// 按y坐标排序大字
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bigChars.sort((a, b) => a.yCenter - b.yCenter);
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// 计算物理列中心
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// 计算物理列中心（包括所有字符）
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let allChars = [...bigChars];
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for (const pair of smallPairs) {
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if (pair.right) allChars.push(pair.right);
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if (pair.left) allChars.push(pair.left);
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}
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const xCenter = allChars.reduce((sum, c) => sum + c.xCenter, 0) / allChars.length;
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return {
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@ -148,33 +148,38 @@ export class GridRenderer {
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/**
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* 双行小字配对
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* 按line_id顺序配对：先出现的line_id是右列，后出现的line_id是左列
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*/
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pairSmallChars(smallChars) {
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if (smallChars.length === 0) return [];
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// 按x坐标分左右
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const xValues = smallChars.map(c => c.xCenter);
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const xThreshold = xValues.reduce((a, b) => a + b, 0) / xValues.length;
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// 右列（x >= 阈值）和左列（x < 阈值）
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const rightChars = smallChars
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.filter(c => c.xCenter >= xThreshold)
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.sort((a, b) => a.yCenter - b.yCenter);
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const leftChars = smallChars
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.filter(c => c.xCenter < xThreshold)
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.sort((a, b) => a.yCenter - b.yCenter);
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// 配对
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pairSmallChars(logicalCols) {
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const pairs = [];
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const maxLen = Math.max(rightChars.length, leftChars.length);
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for (let i = 0; i < maxLen; i++) {
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pairs.push({
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right: rightChars[i] || null,
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left: leftChars[i] || null,
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// 使用右字符的y坐标作为配对的位置基准
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yCenter: rightChars[i]?.yCenter || leftChars[i]?.yCenter
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});
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// 找出所有全是小字的逻辑列
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const smallLogicalCols = logicalCols.filter(lc => lc.isAllSmall);
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if (smallLogicalCols.length === 0) return pairs;
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// 按line_id排序（确保右列在前，左列在后）
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smallLogicalCols.sort((a, b) => a.lineId - b.lineId);
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// 成对处理：每两个连续的小字逻辑列配对
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for (let i = 0; i < smallLogicalCols.length; i += 2) {
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const rightCol = smallLogicalCols[i];
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const leftCol = smallLogicalCols[i + 1];
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// 右列和左列各自按y排序
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const rightChars = [...rightCol.chars].sort((a, b) => a.yCenter - b.yCenter);
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const leftChars = leftCol ? [...leftCol.chars].sort((a, b) => a.yCenter - b.yCenter) : [];
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// 配对：右列第i个 配 左列第i个
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const maxLen = Math.max(rightChars.length, leftChars.length);
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for (let j = 0; j < maxLen; j++) {
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pairs.push({
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right: rightChars[j] || null,
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left: leftChars[j] || null,
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// 使用右字符的y坐标作为配对的位置基准
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yCenter: rightChars[j]?.yCenter || leftChars[j]?.yCenter
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});
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}
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}
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return pairs;
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@ -193,21 +198,30 @@ export class GridRenderer {
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}
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}
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// 计算行高
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const cellHeight = this.ocrData.Height / this.rowsPerColumn;
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if (this.physicalColumns.length === 0) return;
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// 填充物理列到网格
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// 从右到左填充（物理列已经从右到左排序）
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// 计算单元格尺寸
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const cellHeight = this.ocrData.Height / this.rowsPerColumn;
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const cellWidth = this.ocrData.Width / this.totalColumns;
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// === 问题2：检测空列，映射物理列到网格列 ===
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const columnMapping = this.detectEmptyColumns(cellWidth);
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// === 问题3：多列对齐基准（暂时简化，后续可优化）===
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// 找到所有物理列中第一个字的最小y坐标作为参考基准
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// const topMostY = this.findTopMostY();
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// 填充每个物理列
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for (let pi = 0; pi < this.physicalColumns.length; pi++) {
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const pc = this.physicalColumns[pi];
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const gridCol = pi; // 从第0列开始填充
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const gridCol = columnMapping[pi];
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if (gridCol >= this.totalColumns) {
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console.warn(`物理列${pi}超出网格范围`);
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if (gridCol >= this.totalColumns || gridCol < 0) {
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console.warn(`物理列${pi}映射到网格列${gridCol}超出范围`);
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continue;
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}
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// 合并大字和小字对，按y坐标排序
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// 合并大字和小字对
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const items = [];
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// 添加大字
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@ -234,18 +248,92 @@ export class GridRenderer {
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// 按y坐标排序
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items.sort((a, b) => a.yCenter - b.yCenter);
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// 从第0行开始填充（规整化排版）
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if (items.length === 0) continue;
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// === 问题1：基于y坐标计算行号 ===
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for (const item of items) {
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const row = Math.round(item.yCenter / cellHeight);
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// 填充到网格，从第0行开始
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for (let i = 0; i < items.length; i++) {
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if (i < this.rowsPerColumn) {
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this.grid[gridCol][i] = items[i];
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if (row >= 0 && row < this.rowsPerColumn) {
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this.grid[gridCol][row] = item;
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} else {
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console.warn(`字符 "${item.char || '[pair]'}" 行号${row}超出范围[0, ${this.rowsPerColumn})`);
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}
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}
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}
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}
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/**
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* 检测空列，返回物理列到网格列的映射
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* 问题2的解决方案
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*/
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detectEmptyColumns(cellWidth) {
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const mapping = [];
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if (this.physicalColumns.length === 0) return mapping;
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// 计算所有物理列之间的间距
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const gaps = [];
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for (let i = 0; i < this.physicalColumns.length - 1; i++) {
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const gap = this.physicalColumns[i].xCenter - this.physicalColumns[i + 1].xCenter;
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gaps.push(gap);
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}
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// 计算标准列间距（使用 cellWidth 或根据数据计算）
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// 方法1：基于版式
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const standardGap = cellWidth;
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// 方法2（可选）：从实际间距中过滤异常值，取平均
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// const normalGaps = gaps.filter(g => g < cellWidth * 1.5);
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// const avgGap = normalGaps.length > 0
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// ? normalGaps.reduce((a, b) => a + b, 0) / normalGaps.length
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// : cellWidth;
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// 映射物理列到网格列
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let currentGridCol = 0;
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mapping[0] = currentGridCol;
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for (let i = 0; i < gaps.length; i++) {
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const gap = gaps[i];
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if (gap > standardGap * 1.5) {
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// 大间距，中间有空列
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const emptyColumns = Math.round(gap / standardGap) - 1;
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currentGridCol += 1 + emptyColumns;
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} else {
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// 正常间距
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currentGridCol += 1;
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}
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mapping[i + 1] = currentGridCol;
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}
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console.log('列映射:', mapping);
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return mapping;
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}
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/**
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* 找到所有物理列中第一个字的最小y坐标（对齐基准）
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* 问题3的辅助方法
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*/
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findTopMostY() {
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let topMostY = Infinity;
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for (const pc of this.physicalColumns) {
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// 找到该物理列的第一个字符
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const allItems = [...pc.bigChars];
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for (const pair of pc.smallPairs) {
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if (pair.right) allItems.push(pair.right);
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}
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allItems.sort((a, b) => a.yCenter - b.yCenter);
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if (allItems.length > 0 && allItems[0].yCenter < topMostY) {
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topMostY = allItems[0].yCenter;
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}
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}
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return topMostY === Infinity ? 0 : topMostY;
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}
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/**
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* 渲染网格到Canvas
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*/
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