JPS6267986A - Picture processor - Google Patents

Abstract

PURPOSE:To perform a high speed and correct picture processing by reducing a digital picture, executing a picture processing to the obtained reduced picture, detecting an area of the picture to be noticed, and performing again the picture processing only to the picture area desired to notice on an original picture before the reduction. CONSTITUTION:An original picture (A) is reduced like a reduced picture 1 (B) or a reduced picture 2 (C). As a method thereof, only picture elements indicated by biases of (B)', (C)' of all picture elements of the original picture (namely, in the case of the reduction ratio of 1/4, at an interval of one picture element longitudinally and laterally and in the case of the reduction ratio of 1/16, at an interval of three picture elements longitudinally and laterally) are sequentially rearranged. Then, a picture desired to notice on the reduced picture is detected, and an area occupied by the noticed picture is obtained as an address on a reduced picture memory means. Based on the detected noticed area on the reduced picture memory means, a noticed area on the original picture is set and a picture processing is applied only to the noticed area of the original picture.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to image processing that can be used in general industrial work handling/processing equipment, and that processes all images obtained from a TV right camera and measures their feature quantities. Regarding equipment.

(Prior art) As such an image processing device, for example, Japanese Patent Application Laid-Open No. 58-156
No. 273 discloses a multi-window type image information masking device, and such multi-window type devices are also known as commercially available products.

These devices are generally known as devices that limit the processing area of an image obtained from a camera using a window, that is, a small window for measurement, but in these devices, the position of the window etc. is fixed and the processing area is There were considerable restrictions when the location of the desired image was uncertain.

(Problems to be Solved by the Invention) The present invention aims to solve all of these problems and to realize faster image processing. That is, in order to perform more accurate image processing, it is necessary to obtain an image composed of more pixels. However, the more pixels, the more processing is required, which naturally increases the processing time. An object of the present invention is to provide a faster and more accurate image processing apparatus by performing high-speed image processing only on images of interest.

(Means for Solving the Problems) Therefore, in the present invention, when performing image processing in an image processing device, the digital image is reduced 1-5, and all image processing is performed on the obtained reduced image, and the image to be focused on is This image processing apparatus is characterized in that after detecting the area, image processing is performed again only on the first image area of interest on the original image before reduction.

(Embodiment) FIG. 1 shows the main configuration of an image processing device of the present invention, and FIG. 2 shows a flowchart of a processing outline of the device.

The image obtained from the TV right camera (a,) is converted from an analog quantity to a digital quantity by the A/D conversion means (b) and stored in the original image memory means (c). (The image is divided into, for example, 512 x 512 points, and each point is assigned a value corresponding to its brightness as 1.&YTE in the original image memory means.) Next, the digital image in the original image memory means (b) is The reduction processing unit (d) reduces the reduced image (2
56x256 or 128x128 points) and this reduced image is stored in the reduced image memory means (e).

As for the image reduction processing section, as shown in Fig. 3, the original image (A) is reduced to reduced image 1 (B) or reduced image 2 (C), and the method is shown in Fig. 4. As,
Of all the pixels in the original image, those indicated by diagonal lines in FIGS. 4(B) and (C)
Only the pixels in the area (when the reduction rate is 1/4, every other pixel in both the vertical and horizontal directions, and when the reduction rate is 1/16, every 3 pixels in the vertical and horizontal directions) are treated as valid pixels, and the reduced image memory is stored. Second, only effective pixels are continuously rearranged. This effectively reduces the original image onto the reduced image memory means.
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Next, the reduced image area of interest detection unit (f) performs various known image processing on the reduced image to detect all images of interest, and obtains the area occupied by the image of interest as an address on the reduced image memory means.

A region of interest in the original image is set based on the detected region of interest on the reduced image memory means, and only the region of interest in the original image is subjected to image processing. That is, the original image focused area detecting unit (fo) magnifies the original image memory means (c ) into an address indicating the image area of interest above (FIG. 5). Finally, the area of interest image processing gA (in 71, the original image memory means-4 obtained by the original image area of interest detection unit (fo))
Only the pixels corresponding to the addresses indicating the image area of interest (-) are subjected to image processing using a known method.

(Operations and Effects of the Invention) According to the present invention, the time required to process an image with a large number of pixels, such as 512 x 512 pixels, has been reduced from a fraction of that time to several tens of minutes. Now it only takes 1 processing time.

Furthermore, since images that do not require any nozzle or processing are actually erased, the possibility of incorrect processing is reduced by a considerable amount.

In addition, even if the position of the image you want to focus on is uncertain, the image area you want to focus on is detected in a short time on the reduced image and the actual image processing is performed from there, so unlike conventional technology, only fixed areas are processed. It is more reliable and versatile than other methods.

According to the above, the present invention can realize accurate image processing with few errors at high speed.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a claim diagram showing the main configuration of the image processing device of the present invention, Fig. 2 is a schematic flowchart of processing of the device shown in Fig. A diagram showing the reduction relationship between reduced image 1 (B) and reduced image 2 (C), FIG.
An explanatory diagram showing a state in which effective pixels, that is, the shaded areas are extracted from the original image pixel power to create reduced images 1 (B) and 2 (C) in the figure. Figure 5 is the original image attention area of Figure 1. FIG. 3 is an explanatory diagram showing the action of the detection section. a. TV camera b... A/D conversion means C... Original image memory means d... Image reduction processing section e... Reduced image memory means f... Reduction Image area of interest detection unit f゛... Original image area of interest detection unit 2... Area of interest image processing unit Representative Patent attorney Jun Kawauchi 2 Figure 1 2 [D% Transfer destination decoy flow Hand yard (C) m small, i! 142 (+28xlH) Fig. 3

Claims (1)

[Claims] a TV camera that outputs image information; an A/D conversion means that converts the image information of the TV camera into a digital amount;
An original image memory means for storing the output of the /D conversion means as a digital original image, an image reduction processing section for converting the digital original image into a reduced image from the memory means, and an output of the reduction processing section for storing the output as a reduced image. a reduced image area of interest detection unit that processes the reduced image of the reduced image memory unit to detect an area of the image to be focused on, that is, a reduced image area of interest, and the reduced image area of interest detection unit detects. an original image region of interest detection unit that converts the reduced image region of interest into a region of interest of the original image, that is, an original image region of interest;
An image processing device comprising: a region of interest image processing unit that processes an image of the region of interest of the original image detected by the original image region of interest detection unit.