ES2242527B1 - IMPROVEMENTS INTRODUCED IN THE PATENT OF INVENTION 200201332 OF "MEANS OF RECOGNITION OF IMAGES". - Google Patents

Abstract

Improvements introduced in the invention patent 200201332 of "Image recognition means". Improvements consisting of the video signal applied to a discriminator together with a general threshold voltage a series of PNT pulses for each step from a white to black level, pulses applied to a microprocessor, on the other hand the video signal is applied to a synchronization separator that obtains a vertical synchronization signal that is used to determine the width of the extension of a frame, and a horizontal synchronization signal used by the microprocessor determines the black steps due to the PNH synchronism itself, so the quantity of changes to black due to the number of points on the top face of a PND die is equal to the difference between PNT and PNH, and from that PND amount, and taking into account a possible error "q", and a constant of proportionality "k" determines the number of points on the top face of a dice.

Description

Improvements introduced in the invention patent nº 200201332 of: "Image recognition means".

Object of the invention

The present invention aims at a series of improvements made to image recognition media object of patent 200201332.

The object of the invention described in the report 20020132 consists of four blocks: video camera, synchronism amplifier-separator, discriminator and microprocessor of control and external communication,  enabling this structure to read the image of the face superior of a dice, fallen in any imaginable position.

The present improvements characterize the way that the signal obtained from both the discriminator and the sync separator, is treated by the microprocessor, allowing automatic recognition of the number of points of a die based on the signals obtained.

Therefore, the present invention is circumscribes within the scope of recognition systems of images and particular form of those that serve to the recognition of the number of points that a dice presents.

Background of the invention

The image recognition system described in patent application ES200201332 although it uses both the vertical and horizontal synchronization signals from the sync separator, as well as the signal obtained from a discriminator was not explained precisely how by which the identification of the points was carried out of a dice after its roll.

In CA 2344064 a system is described of complete dice game, in which the reading of the points of the given after its roll is done automatically, by means of a camera and an image recognition system. In specifically the optical device used comprises a TV camera or a specially designed CCD converter, where said camera or Image converter sends its output signals to a processor digital image, which processes the video signals received with respect to of a two-dimensional conversion and resolution, spectral resolution and other parameters, so that the detected image is digitally  converted so that it can be detected by a processor electronic data

Again we observe that it is not described so precise use is made of the video signals obtained by the camera to detect the number of points on the upper face of a dice.

Therefore, the object of the present addition is the   improve face recognition procedure higher than one die, precisely explaining the treatment of the information obtained from the fundamental blocks that Make up the invention.

Description of the invention

The proposed invention of media improvements of image recognition, consists in the use of horizontal synchronization signals obtained from a sync separator, and the output pulse obtained after Pass the video signal through a discriminated. Both signals they are taken to a microprocessor in charge of processing said information and indicate the number of points on the upper face of a given after his roll.

In patent ES 200201332 it was described that Image recognition media consisted of four blocks: a conventional video camera, a amplifier-sync separator, which difference between the video signal, the synchronization signal horizontal, and the vertical sync signal and a microprocessor control.

Now with the video signal obtained after the horizontal and vertical synchronization separator, is passed to through a discriminator, which adjusts to a threshold voltage that produces an output pulse every time the screen goes from white levels to black levels. Black and white levels are adjusted by discriminator adjustment and impulses produced by it at its output are sent to the microprocessor. At least there will be as many impulses as synchronization lines horizontal, since at the end of each sync line is recognized as a change in hue.

On the other hand the vertical sync signal is used to determine the extent of a picture while the horizontal sync signal is used to count the number of black steps that are due to the synchronism itself.

We will call PNT, (total black steps) of the video signal in a screen box obtained by the discriminator On the other hand PNH is the number of steps to black due to the horizontal synchronism itself.

Therefore, the total black steps due to the very points of the upper face of the dice, which we will call PND, is equal to the difference between PNT and PNH. That is to say:

PND = PNT - PNH

Now, the number of steps to black per point of the dice, that is, PND, depends on the number of lines of horizontal synchronization that cut by point, which by term medium, there are about 20 horizontal sync lines that cut by point.

Considering an error interval of "q" with respect to the PND, the number of changes to black per point, the total or point number of a die from the signals previously obtained is:

PND \ pm \ q \ = \ K \ x \ Points \ del \ Dice.

So that:

Points \ del \ given \ = \ (PND \ pm \ q) / K

Where K is a constant of proportionality, that comes to be around 20.

In order to avoid having to perform calculations in the process of calculating the number of points on a dice, they have recorded in a memory attached to the microprocessor a table that allows to obtain by correlation from the PND data, the number of points of a dice.

In case the obtained PND value was  between two possible numbers of points of a dice, it would proceed to activate a membrane that would bounce the dice, giving Place to a new roll.

Description of the drawings

To complement the description below is going to be done and in order to help a better understanding of its characteristics, is accompanied by the present specification, of a set of planes in whose figures, illustratively and not limiting, the most significant details of the invention.

Figure 1. Shows a schematic representation of the improvements made in the means of recognition of images.

Preferred Embodiment of the Invention

In view of the figures described then a preferred embodiment of the invention proposal for improvements in the invention patent 200201332.

Figure 1 shows that the video signal (1) obtained by means of a camera, is applied to one of the entries of a discriminator (3). To the other entrance of discriminator (3) applies a threshold voltage (4) obtained to from a voltage divider.

The threshold voltage (4) allows to select the levels from which the screen line is considered  Go from a white level to a black level.

The output signal of said discriminator (3) are a series of output pulses (5) that are applied to a microprocessor (8). The total number of pulses counted by the microprocessor is what we have called PNT, (steps to black totals) that are at least one for each sync line horizontal, to which the points of the Since there was.

On the other hand, the video signal (1) is processed by a sync separator (2) that you get at your exit, a video signal, a horizontal synchronization signal (6), and a vertical sync signal (7).

The vertical sync signal (7) is used by the microprocessor (8) to determine the extent of the screen box. While the sync signal horizontal is used by the microprocessor (8) to count the number of black steps (PNH) due to synchronism itself.

As previously stated, the total number of black steps due to the number of points in the top face of the dice, that is, PND, is the difference between PNT and PNH values.

PND = PNT - PNH

In order to know the number of points on the upper side of the die, the set has an engraved table in which there is a correlation between the number of black steps due to the die and the number of points on the upper face. This table is made taking into account that the PND, number of steps to black can have a certain error interval "q", and that the proportionality constant "K", is of the order of 20. This constant is the number of screen lines that cross one point on average. Therefore the values in the table are based on the following
expression.

PND \ pm \ q \ = \ K \ x \ Points \ del \ Dice.

So that:

Points \ del \ given \ = (PND \ pm \ q) / K

With what we would obtain the reading of the points (9) of the dice.

This description does not become more extensive, in the good to understand that any expert in this area would have enough information to understand the scope of the invention and its derived advantages, as well as to proceed to reproduce the same.

Claims (4)

1. Improvements introduced in the invention patent 200201332 of "Image recognition means" that have a video camera that obtains a signal (1), a synchronism separator (2) that offers a video signal at its output, a horizontal synchronization signal (6) and a vertical synchronization signal (7), a discriminator (3) and a microprocessor (8), characterized in that the discriminator (3) from the video signal (1) and a Threshold voltage (4) supplies a series of pulses to the microprocessor (8) each time it goes from white to black, PNT, on the other hand, the vertical synchronization signal (7) is used by the microprocessor (8) to determine the width of the screen frame, while the horizontal synchronization signal (6) is used by the microprocessor (8) to count the number of black steps that are due to the synchronism itself, PNH, so the number of black steps due to the amount of points in the top face of the dice, PND, is equal to the difference between the number, PNT, black steps from the discriminator minus the PNH, black steps due to the synchronization itself. 2. Improvements introduced in the invention patent 200201332 of "Image recognition means" according to claim 1, characterized in that the total number of points on the upper face of a die is determined from the PND number, number of steps to black due to the amount of points on the top face of the dice, taking into account a small error interval "q" and a constant "K", which is the number of horizontal synchronization lines that on average pass through each point of a dice, establishing said relationship in: Points \ del \ given \ = \ (PND \ pm \ q) / K 3. Improvements introduced in the invention patent 200201332 of "Image recognition means" according to claim 2, characterized in that in order to avoid having to calculate any number of points on the upper face of a die from PND, a correlation table is established between the PND figure, and the number of points of a dice, taking into account the possible error interval "q" and the proportionality constant "K", said table being recorded in the system and being consulted by the microprocessor. 4. Improvements introduced in the invention patent 200201332 of "Image recognition means" according to claim 1, characterized in that the threshold voltage (4) allows to select the levels from which the screen line is considered to pass from a white level to a level of
black.