if(singleChar == '-') //是否为减号 { tp = fp; //文件指针指向当前位置 fscanf(tp,"%c",&nextChar); if(nextChar == '>') { fp = tp; continue; } } if(singleChar == '|') { Grammar[i+1][0] = Grammar[i][0]; Grammar[i][j] = '\0'; i++;
时间: 2023-06-15 08:07:04 浏览: 58
这段代码看起来像是在进行一个文法的处理,根据输入的文法规则来生成相应的产生式。
如果读入的字符是一个减号,那么就判断下一个字符是否是大于号,如果是的话,就将文件指针移动到下一个位置,继续读取下一个字符,否则就不做处理。
如果读入的字符是一个竖线,那么就将当前产生式的左部复制到下一个产生式的左部,然后将当前产生式的右部截断,跳到下一个产生式继续读入。这个操作的作用是将原本一个产生式中的多个右部拆分成多个产生式,每个产生式只有一个右部,方便后续处理。
不过这段代码只有这么一部分,无法确认这段代码的整体作用和流程。
相关问题
while(!feof(fp)) //判断输入字符 { fscanf(fp,"%c",&singleChar); if(singleChar == '?') { Grammar[i][j] = '\0'; break; } if(singleChar == '\n') { Grammar[i][j]='\0'; i++; j = 0; continue; } if(singleChar == '-') { tp = fp;
这段代码的作用是从文件中读取文本,将其存储在一个二维字符数组Grammar中。具体来说,代码首先使用while循环读取文件中的字符,直到文件结束。在循环中,使用fscanf从文件中读取一个字符,并将其存储在变量singleChar中。接着,代码使用if语句判断读取的字符是否为问号"?"。如果是,表示当前语法规则已经读取完毕,将其存储在二维字符数组Grammar中,并退出当前循环。如果读取的字符为换行符"\n",表示当前行已经读取完毕,将其存储在二维字符数组Grammar中,并将行数i加1,列数j重置为0。如果读取的字符为"-",则将文件指针tp指向当前位置,但是代码没有给出后续的处理流程,因此无法判断其具体作用。
Tesseract.PageSegMode
`Tesseract.PageSegMode` is an enumeration in the Tesseract library that represents the page segmentation mode to be used during OCR.
Here are the different values available for `Tesseract.PageSegMode`:
- `Tesseract.PageSegMode.OsdOnly`: Orientation and script detection (OSD) only
- `Tesseract.PageSegMode.AutoOsd`: Automatic page segmentation with OSD
- `Tesseract.PageSegMode.AutoOnly`: Automatic page segmentation, but no OSD or OCR
- `Tesseract.PageSegMode.Auto`: Fully automatic page segmentation, but no OSD or OCR
- `Tesseract.PageSegMode.SingleColumn`: Assume a single column of text of variable sizes
- `Tesseract.PageSegMode.SingleBlockVertText`: Assume a single uniform block of vertically aligned text
- `Tesseract.PageSegMode.SingleBlock`: Assume a single uniform block of horizontally aligned text
- `Tesseract.PageSegMode.SingleLine`: Assume a single text line
- `Tesseract.PageSegMode.SingleWord`: Assume a single word of text
- `Tesseract.PageSegMode.CircleWord`: Treat the image as a single word in a circle
- `Tesseract.PageSegMode.SingleChar`: Treat the image as a single character
You can set the page segmentation mode of a `TesseractEngine` instance by calling its `SetPageSegMode` method and passing in a `Tesseract.PageSegMode` value. For example:
```
using Tesseract;
class MyOCRProgram {
static void Main(string[] args) {
// Initialize the TesseractEngine with the default configuration
using (var engine = new TesseractEngine("./tessdata", "eng", EngineMode.Default)) {
// Set the page segmentation mode to single line
engine.SetPageSegMode(PageSegMode.SingleLine);
// Use the TesseractEngine to perform OCR on an image
using (var img = Pix.LoadFromFile("/path/to/image.png")) {
using (var page = engine.Process(img)) {
var text = page.GetText();
Console.WriteLine(text);
}
}
}
}
}
```
In this example, we set the page segmentation mode of the `TesseractEngine` instance to `PageSegMode.SingleLine`. This will cause the engine to assume that there is only one line of text in the image, which may improve OCR accuracy in certain cases.