JPH01197884A - Moving picture display device - Google Patents

Abstract

PURPOSE:To more easily observe a moving picture by equipping the title device with a picture density converting means, changing a conversion picture stored by a picture storing means by a display means based on a picture conversion table, and displaying the changed picture by the display means. CONSTITUTION:A picture density conversion table (LUT) device 8 to convert picture density and a display device 6 can be operated completely independently of a high-speed transfer picture drawing device 3 to display the moving picture, a moving picture memory 4, and a picture memory 5. Consequently, it is possible to input picture density information from an input device 9, send the information through a CPU1 to the LUT device 8, and update density conversion information at the LUT device 8 while displaying the moving picture. Thus, a user can freely change the picture density to the one with which the user can observe moving picture display more easily while observing the moving picture display. Further, since the moving picture is displayed brightly even when the density level of picture elements is low by reversing the density, the observation can be easier.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an image display device for diagnostic images such as X@CT and MRI in the medical field, and in particular to the heart.

Dynamically display images of subjects with periodic movements such as blood vessels! The present invention relates to a moving image display device for displaying images.

[Conventional technology]

Conventionally, image density conversion for a still image (one image) involves arbitrarily changing the WIDTH and LEVEL values of one image density and rewriting the LUT (image density conversion table) to determine the image density. However, a method of displaying the image on a CRT is generally known. Incidentally, related devices of this type include, for example, Japanese Patent Application Laid-Open No. 60-75033 and Japanese Patent Application Laid-Open No. 61-194576.

[Problem to be solved by the invention]

The above-mentioned conventional technology deals with still images and does not take into consideration moving images, especially the observation of moving images such as the heart and blood vessels in medical images, making it difficult to perform inspection of these medical images. There was a problem.

It is an object of the present invention to also apply to moving images.
value.

The LEVEL value can be changed arbitrarily,
Furthermore, by performing the density inversion, it is possible to facilitate the observation of moving images of the heart, blood vessels, etc.

[Means to solve the problem]

The above object includes a storage means for storing moving images, an input means for inputting the moving image display command, a transfer signal of the target image stored in the storage means by the output of the input means, a moving image start command 2 image display a CPU that outputs a luminance conversion signal at a time; a moving image storage means that stores the target images stored in the storage means according to the transfer signal of the CPU in display order; a high-speed image transfer drawing means that inputs a start command, converts the image into an image corresponding to the image display information, and outputs the converted image;
In a moving image display device having an image storage means for storing the converted image and a display means for displaying the image in the image storage means, the image brightness conversion signal of the CPU is input and the density of each designated pixel is displayed. This is achieved by a moving image display device comprising an image density conversion means for converting information into an image conversion table, and wherein the display means changes and displays the converted image stored in the image storage means based on the image conversion table.

[Effect]

The storage means stores the input target image, the input means inputs an image display command for the target image, and the CPU generates a transfer signal for the target image based on this command.

Video start command 9 Output display image density conversion signal.

The video storage means stores the transferred target images in the display order, the high-speed image transfer drawing means converts and outputs the images corresponding to the image display information, the image storage means stores the images converted to the display information, and the image storage means stores the transferred target images in the display order. The density conversion means sets the density information of each pixel specified by the CPU in the density table, and the display means converts each image stored in the image storage into the density table.
- Converts digital to analog signal based on the pull and displays it on the screen.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

A plurality of images to be displayed as moving images are stored in the main storage device or external storage device 2.
I stores the moving images in the moving image memory 4 in the order in which moving images are to be displayed.

Next, the CPU interprets the video display information instructed from the input device 9, sets the high-speed image transfer drawing device a (3), and issues a startup command to start the video. According to the instructions, the image is taken out from the video memory 4.

Transfer to image memory 5. When the nth image has been displayed, it is displayed again from the first image, and the process is executed cyclically until a stop command is received from the CPU to end the video.

The image stored in the image memory 5 is displayed on the display device 6 using image density information (WIDTH value,
LEVEL value, density inversion) is converted by the CPU into an image source conversion table as shown in FIG. 2, set in the image density conversion table (LUT) device 8, and analog converted while referring to it Displayed on CRT7.

The method of this conversion is shown using FIG. For example, if the value of each pixel of an image is taken from -V to V, the displayed image density will be O-L, and the digitally converted signal will be 0-I on the display device 6. , until O
= G V pp is converted into an analog signal. At present, when there is no instruction to invert the density from the CPU 1, if there is an instruction to invert the density, signals up to OL are converted into analog signals of G to OV p p.

The converted signal is displayed on the CRT 7 and can be observed by the user.

Further, the LUT device 8° display device 6 for converting the image density is connected to a high-speed transfer image drawing device 3 for displaying a moving image.
．． Video memory 49 Image memory 5. Since it is possible to move completely independently of the
The density conversion information can be updated in the device 8. This allows the user to freely change each image to make it easier to view while viewing the video display. Also, by performing density inversion, even areas with a low density level of one pixel will be displayed brightly [? N becomes easier.

The LUT device plays the role of instructing the image density at which each pixel in the image memory should be displayed on the CRT, and has a table structure. Each pixel is
Refer to the UT device and see what density it is converted into an analog signal and display it on the CRT. Normally, when the value of each pixel is small, a dark color is displayed, and when it is large, a bright color is displayed, but by inverting the pixel's value, a bright color is displayed when the value of each pixel is small, and a dark color is displayed when it is large. do it like this.

According to this embodiment, when the heart and blood vessels are displayed in a moving image and the blood flowing through them is to be observed, the pixel values representing the blood vessels are generally small, so by inverting the density and displaying them brightly, This has the effect of allowing easy observation of blood flowing through blood vessels.

〔Effect of the invention〕

According to the present invention, it is possible to operate the image density conversion table device 2 display device that converts the image density completely independently of the high-speed transfer image drawing device that displays the moving image, the moving image memory, and the image memory, so that the moving image can be displayed. At the same time, it is possible to invert the density of the object and brightly display areas with small pixel values, which has the excellent effect of making it easier to identify and observe the object while displaying a moving image.

[Brief explanation of the drawing]

FIG. 1 is a functional block diagram of an embodiment of the present invention, and FIG. 2 is a diagram showing an image density conversion table and the concept of digital-to-analog conversion by a display device. DESCRIPTION OF SYMBOLS 1... CPU, 2... Storage means, 3... High-speed image transfer drawing means, 4... Video storage means, 5... Image storage means, 6... Display device, 7... CRT, 8...
Image density conversion table (LUT), 9...input means. Fig. 1 Fig. 2 Incense i/) Jangshaku Nogikaku and Rekiryoku

Claims (1)

[Claims] 1. Storage means for storing a moving image, input means for inputting an image display command for the moving image, and a transfer signal, a moving image start command, and an image display of the target image stored in the storage means based on the output of the input means. a CPU that outputs a time density conversion signal;
a moving image storage means for storing the target images stored in the storage means in accordance with the display order according to the transfer signal of the CPU; A moving image display having a high-speed image transfer drawing means for converting an image into an image corresponding to a command and outputting the converted image, an image storage means for storing the converted image, and a display means for displaying the image in the image storage means. The apparatus includes image density conversion means for inputting an image density conversion signal from the CPU and converting density information of each designated pixel into an image conversion table, and the display means displays the converted image stored in the image storage means. A moving image display device that changes and displays an image based on the image conversion table.