JPH05223950A - Hair detecting apparatus for packed food - Google Patents

Abstract

PURPOSE:To detect hair mixed in packed food automatically. CONSTITUTION:A packed-food conveying conveyer, an image sensing device for photographing the optical image of the food conveyed on the conveyer, a binary-coding means 2 for binary-coding the picked-up optical image, a partial- feature extracting means 4, which extracts the shape of the hair among the binary-coded data with the binary-coding means as the partial feature, and a linear-body judging means 5, which judges whether the data extracted with the partial-feature extracting means 4 are straight or curved linear bodies having the thickness smaller than a specified value and the length longer than a specified value or not, are provided. The result judged with the linear-body judging means 5 is displayed on a display device 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pack food hair detecting device for detecting whether hair is mixed in a pack food.

[0002]

2. Description of the Related Art In order to transport and display food in a hygienic manner while suppressing deterioration of quality, it is widely practiced today to enclose the food in a plastic film packaging bag. Further, in the case where the packing of the food is carried out by an automation system without human intervention, the food can be packaged and managed in an extremely hygienic manner by repeatedly washing the device.

[0003]

However, depending on the type of food, mainly the shape of the food, there is a system in which a worker partially intervenes in the work such as shape retention and weighing. However, the hair of workers, etc. may be mixed in the packaging bag together with food, and therefore it is recognized that general consumers do not have sufficient food control, and the product value and operating profit There was a problem such as harming.

The present invention has been made by paying attention to the above-mentioned conventional problems, and a hair detecting device for packed foods which can automatically detect hair mixed in packed foods and contribute to improvement of product management. The purpose is to provide.

[0005]

According to the present invention, there is provided a hair detecting device for a packed food, a conveyer for carrying the packed food, an image pickup device for picking up an optical image of the food carried on the conveyer, and an image pickup device. Binarizing means for binarizing the optical image; partial feature extracting means for extracting the hair shape as a partial feature from the binarized data by the binarizing means;
The extraction data by the partial feature extraction means has a certain degree of thinness or less,
A linear body determination means for determining whether or not a linear body having a straight line or a curved line having a certain length or more is provided, and the determination result by the linear body determination means is displayed on the display. It is a thing.

[0006]

The linear object determining means in the present invention is a straight or curved line having a certain length or more and a certain thinness or less from the data obtained by binarizing the optical image and the data extracted by the partial extraction unit. It functions to determine whether or not there is a state and to display the presence or absence of hair on the display according to the determination result.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block connection diagram showing a hair detection device for packed food according to the present invention. In the figure, 1 is a photoelectric conversion means for photoelectrically converting the optical image of the packed food, 2 is a binarizing means for binarizing the signal of the photoelectrically converted optical image, and 3 is the serialized data thus binarized. It is a pattern memory including a shift register and the like that can be collectively input after being input and stored.

Further, 4 is a partial feature extracting means for extracting only the hair shape as a partial feature from the patterned data in the pattern memory 3, and 5 is the extraction data by the partial feature extracting means is below a certain level. Is a linear body determining means for determining whether or not it is a linear or curved linear body having a length of a certain length or more, and 6 is a display such as a CRT for displaying the determination result as an image. ..

2 and 3 show the photoelectric conversion means 1 described above.
-A front view and a side view showing a configuration of a hair detection device equipped with a display 6, in which 11 is a conveyer for conveying packed food, for example, a belt 14 guided by a drive roll 12 and a driven roll 13. It consists of things to move. Reference numeral 15 is a frame on which the conveyor 11 is installed.

Further, 16 is a support column established on the pedestal 15, and 17 is an image pickup device mounted on the support column 16 so as to capture an optical image of the packed food conveyed on the belt 14 on the conveyor 11. The image pickup device 17 is arranged so as to face the belt 14 and moves up and down so as to be able to move toward and away from the belt 14 and illumination light from the video camera 18 on the belt 14 from, for example, four places around the mounting portion. It is provided with a light 19 for irradiating the screen and a display 20 such as a CRT.

Next, the operation will be described. First, the packed food for determining whether or not hair is mixed is placed on the belt 14 of the conveyor, moved to the lower part of the video camera 18, and the video camera 18 is operated. Therefore, the packed food product is irradiated with the light 19, is imaged by the video camera 18 of the imaging device 17, and the optical image thereof is converted into an electric signal by the photoelectric conversion means 1.

Next, the photoelectrically converted electric signals are binarized and sequentially sent to the pattern memory 3 to be accumulated therein. For example, when three rows are accumulated, they are simultaneously read out and converted into signals. To do. Further, of the pattern data thus obtained, the hair shape is extracted as a partial feature from the partial feature extracting means 4, and whether or not the extracted partial feature corresponds to a basic figure which is not allowed by the design rule is determined. That is, the linear pattern determination means analyzes the data pattern from vertical, horizontal, and diagonal directions to determine whether the linear pattern is a straight line or a curved line having a certain thickness or less and a certain length or more. Determined by

The determination result thus obtained is displayed as an image on the display 20 such as a CRT, and the packed food in which the mixture of hair is identified by the determination result is conveyed by the operator or worker to the conveyor. Measures such as removal from the line and disposal will be taken.
Therefore, the packaged food product is managed so as not to be mixed with a commercial product. For feature extraction technology, 3x3 mask and 5x5 mask (template)
Various extraction techniques have been proposed, such as a template matching method that uses a method and a Kirsch mask method, and the present invention can employ any of the extraction methods.

[0014]

As described above, according to the present invention, the conveyer for conveying the packed food, the image pickup device for picking up an optical image of the food conveyed on the conveyer, and the picked-up optical image described above are provided. The binarizing means for binarizing, the partial feature extracting means for extracting the hair shape as the partial feature from the data binarized by the binarizing means, and the extraction data by the partial feature extracting means are below a certain level. And a linear object determining unit for determining whether the object is a linear or curved linear object having a thinness or a length equal to or more than a certain length, and the determination result by the linear object determining unit is displayed on the display. Since it is configured as described above, the packed food with hair mixed therein is automatically selected, whereby the product management level can be improved and the product value and the operating profit can be increased by discarding the packed food. The effect is It is.

[Brief description of drawings]

FIG. 1 is a block diagram showing a hair detection device for packed food according to an embodiment of the present invention.

FIG. 2 is a front view showing the configuration of hair detection of the packed food of the present invention.

FIG. 3 is a side view of the hair detection device shown in FIG.

[Explanation of symbols]

 2 Binarization means 4 Partial feature extraction means 5 Linear object determination means 6 Display 11 Conveyor 17 Imaging device

Claims (1)

[Claims] 1. A conveyor for conveying packed food, an image pickup device for picking up an optical image of food conveyed on the conveyor, and a binarizing means for binarizing the picked-up optical image.
Of the data binarized by the binarizing means, the partial feature extracting means for extracting the hair shape as the partial features, and the extraction data by the partial feature extracting means are the thinness of a certain level or less and the length of a certain length or more. A hair detection device for a packed food, comprising: a linear body determination means for determining whether or not a linear body having a straight line or a curved line, and a display for displaying a determination result by the linear body determination means.