Build histogram from input image and region, and draw as image. Draw the histogram as a data chart onto provide device context, using the index as x axis and the value as y axis. 基于输入图像和区域，生成直方图，并将直方图绘制为图像输出。 工具不需要通过其它工具设置参数，不需要传入ILHistogram的对象。 Returns a serialized JSON with ResultImg property c...
AI agents call il_histogram_build_draw to retrieve information from Leaper Vision Toolkit without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
width | integer | — | 输出图片的宽度，传入类型为int类型。 |
height | integer | — | 输出图片的高度，传入类型为int类型。 |
binCount | integer | — | 将直方图分为若干个统计区域，传入类型为int类型。推荐设置为总数据范围的因子，比如对一个灰度图，常用设置为 256 ，128，32 等。 |
imageUrl | string | — | 图片的url地址，通过这个地址获取到图片 |
drawFlags | string | — | 绘制标志，传入类型为int类型。控制绘制内容。有效的类型为：LPVChartDrawAsBar = 1（绘制成柱状图 。）、LPVChartDrawAsLine = 2（绘制成折线图 。）、LPVChartDrawGrid = 4（绘制网格。）、LPVChartDrawIndexLabel = 8（绘制 x 轴的索引标 |
xGridStep | integer | — | 绘制x轴的步长，传入类型为int类型。默认设置为 0，表示按照分数曲线数据自动选择合适的步长。 |
yGridStep | integer | — | 绘制y轴的步长，传入类型为int类型。默认设置为 0，表示按照分数曲线数据自动选择合适的步长。 |
lowerBound | integer | — | 统计数据范围的下限，传入类型为int类型。比如对一个 8 位灰度图，常用设置为 0。 |
regionJson | string | — | 指定的Roi区域。如果用户没有指定区域，请直接传入 "null"。 如果用户指定区域，传入一个序列化的JSON字符串，属性包括：LpvClassName(调用工具函数的名称) 和 InputParameterFile(调用工具函数需要传入的参数文件名称)。这两个属性的值可以从前处理的MCP工具的返回值中获取。LpvCl |
upperBound | integer | — | 统计数据范围的上限，传入类型为int类型。比如对一个 8 位灰度图，常用设置为 255。 |
Parameters from the server's own tool schema.
This tool reads/analyzes an input image to compute a histogram and renders it as an output image. It is purely a data analysis and visualization operation with no side effects, modifications, deletions, or financial implications. The output is a new image URL representing the histogram chart, which is a read/transform operation.
From the tool's definition Build histogram from input image and region, and draw as image... Returns a serialized JSON with ResultImg property containing the URL of the output histogram image.
Risk signalsHigh parameter count (10 properties)
Attacks that exploit this kind of access
Build histogram from input image and region, and draw as image. Draw the histogram as a data chart onto provide device context, using the index as x axis and the value as y axis. 基于输入图像和区域，生成直方图，并将直方图绘制为图像输出。 工具不需要通过其它工具设置参数，不需要传入ILHistogram的对象。 Returns a serialized JSON with ResultImg property containing the URL of the output histogram image. It is categorised as a Read tool in the Leaper Vision Toolkit MCP Server, which means it retrieves data without modifying state.
il_histogram_build_draw accepts 10 parameters: width, height, binCount, imageUrl, drawFlags, xGridStep, yGridStep, lowerBound, regionJson, upperBound. The full parameter table on this page comes from the server's own tool schema.
Register the Leaper Vision Toolkit MCP server in PolicyLayer and add a rule for il_histogram_build_draw: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Leaper Vision Toolkit. Nothing to install.
il_histogram_build_draw is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the il_histogram_build_draw rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for il_histogram_build_draw. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
il_histogram_build_draw is provided by the Leaper Vision Toolkit MCP server (leaper-mcp/leaper-mcp-proxy). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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