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| Property | Description | Type | Filling example | Mandatory field |
|---|---|---|---|---|
| Parameters | ||||
| Context | Action context for working with Robin OCR 2. | Robin.OCR2 | Yes | |
| File path | The path to the file from which you want to extract the car number. The image must contain the machine number, otherwise the extracted data may be incorrect. Supported image formats: jpg, jpeg, bmp, dib, rle, jpe, jfif, tif, tiff, png. | Robin.FilePath | Yes | |
| Page number | The page number of the file to extract data from. Numbering starts from 1. If the field is not filled in, the data will be extracted from the first page. | Robin.Numeric | No | |
| Folder path | The path to the folder where the recognized image with the superimposed blocks into which the action divided the data will be saved. To save the file, you also need to fill in the «File name» field. | Robin.FolderPath | C:\doc\img | No |
| File name | The name of the image file with superimposed blocks (without extension). By default, a file with the extension *.png is created. To save the file, you also need to fill in the «Folder path» field. | Robin.String | No | |
| Overwrite | If the value is «true» and an image file with the same name and extension exists in the specified folder, then the new file will overwrite it. If «false», the file will not be overwritten and the action will return an error. | Robin.Boolean | true | No |
| Results | ||||
| The car number | The car number extracted from the original image. | Robin.String | ||
| Image path | The path to the image file with superimposed blocks. | Robin.FilePath | ||
| Recognition confidence | Image recognition accuracy in the range from 0 to 1. | Robin.Numeric | ||
| Status | Status of license plate number recognition.
Number fully recognized - when the license plate number has been fully recognized. Number partially recognized - when the number is not fully recognized: glare on the image, dirt on the number, part of the number is covered, digits are smudged, etc. Region not recognized - the action returned the license plate number itself, but failed to retrieve only the license plate number region. No license plate number found - the image has no text or the number contains invalid characters for a license plate number. e.g. any letters except A, B, E, K, M, NH, O, RP, SC, T, UY, X. Number recognized incorrectly because there are several numbers in the image - the action found several license numbers, merged the data, the result is incorrect. | Robin.String | ||
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Results of image recognition by statuses
Status | Image quality | Recognition results | |
|---|---|---|---|
| 1 | Number fully recognized | Изображение, на котором четко видно автомобильный номер, нет других номеров, бликов и т.д. | |
| An image that clearly shows the license plate number, no other license plates, glare, etc. |
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| 2 | Number partially recognized | На изображении блики, на номере грязь, часть номера закрыта, замазаны цифры и т.д. | |
| There is glare on the image, dirt on the license plate, part of the license plate is covered, numbers are smudged, etc. |
| ||
| 3 | Region not recognized | Изображение, на котором у автомобильного номера нельзя распознать только регион: он закрыт, в грязи и т.д. | |
| An image in which only the region of the license plate cannot be recognized: it is covered, in mud, etc. |
| ||
| 4 | No license plate number found | На изображении нет текста или номер содержит недопустимые символы для автомобильного номера. например любые буквы, кроме А, В, Е, К, М, Н, О, Р, С, Т, У, Х. | |
| The image has no text or the license plate number contains invalid characters for a license plate. e.g. any letters other than A, B, E, K, M, H, O, P, C, T, Y, X. |
| ||
| 5 | Number recognized incorrectly because there are several numbers in the image | На изображении несколько объектов, у которых можно распознать номера и текст. Вывески, рекламы, другие автомобильные и телефонные номера | |
| There are several objects in the image where you can recognize license plates and text. Signs, advertisements, other license plates and telephone numbers |
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Special conditions of use
- If an image without license plates or with several license plates is input, the text data from the image may be recognized incorrectly or not recognized at all. Therefore, it is recommended to use the action only for recognizing one license plate number
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- Acceptable image formats: jpg, jpeg, bmp, dib, rle, jpe, jfif,
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- tif, tiff, png
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- , pdf. If a file of a different extension is specified, the robot will terminate with an error
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- .
- If multiple numbers are found in the image, the action will find all numbers, merge the data, and return 1 invalid result.
- If the parameters "Folder path" and "File name"
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- are not filled in, the file with
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- overlapped blocks will not be saved
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- .
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- If "File name" and "File path" parameters are filled in, the image with blocks will be saved in the specified folder with the specified name in .png format.
- If the action does not find or recognize the license plate, the robot will terminate without error. The action will return "License plate number" - empty, "Recognition accuracy" - the coefficient of the obtained image accuracy, "Image with blocks" - the path to the image without blocks.
- It should be noted that the license plate number may contain similar symbols (1-I, 0-o, B-o-0, 9-0, etc.). In this case, the number is recognized, but the characters themselves may be recognized different from the original ones - "1" as "I", 0 (zero) as "O", and so on. The recognition accuracy in this case may decrease.
Example of use
Task
You need to extract the license plate number from the image
M704PO198, представленного в видеA695KA799, presented as
Solution
Use the action "Create context with Robin OCR 2", "Extract the car number from the image".
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Обзор
Инструменты контента