CN112071403B - Method and system for generating DICOMDIR files containing icon images - Google Patents

Abstract

The invention discloses a DICOMDIR file generation method and system containing icon images. The method comprises the following steps: selecting a DICOM image, and compressing the DICOM image to obtain an icon image; judging whether the DICOM image is a gray level image or a color image, if the DICOM image is the color image, extracting palette data of three colors of the DICOM image, and storing an icon image corresponding to the DICOM image, the height and the width of the icon image and the palette data corresponding to the icon image in a DICOMDIR file; if the icon image is a gray scale image, the icon image corresponding to the DICOM image and the height and width of the icon image are stored in the DICOMDIR file. By adopting the method and the system provided by the invention, the DICOM image can be quickly previewed, and the working efficiency of medical staff is improved.

Description

Method and system for generating DICOMDIR files containing icon images

Technical field

The present invention relates to the technical field of medical image processing, and in particular to a method and system for generating DICOMDIR files containing icon images.

Background technique

Currently in hospitals, medical DICOM (Digital Imaging and Communications in Medicine) images generated by CT, MRI, angiography diagnostic equipment and ultrasound diagnostic equipment can be stored on portable CD or DVD media. Save it as a DICOM image and hand it over to the patient for safekeeping or to other third-party medical institutions when transferring to another hospital, realizing film-free management.

DICOM images usually saved to CD or DVD are managed through DICOMDIR (Digital Imaging and Communications in Medicine Directory, Digital Imaging and Communications in Medical Directory) files, and the DICOM images in CD or DVD can be browsed through image browsing software. .

When using DICOM image browsing software to browse DICOM images on CD or DVD, you usually first preview the icon images (ICONs) of all DICOM images in the image display window of the browsing software, and select one or more DICOM images to display. Go to the screen for detailed observation and diagnosis. When the DICOM image browsing software realizes the preview of the icon image of the DICOM image, it usually queries and searches for the name of each DICOM file from the DICOMDIR file, then opens and reads each DICOM image file to generate the icon image, and then displays the image in the image representation window of the browsing software. expressed in. When there are a large number of images managed by DICOMDIR files in a CD or DVD, it takes a long time to generate icon images. Sometimes it takes more than 20 seconds to generate and represent icon images for all DICOM images in a CD or DVD, resulting in The preview of DICOM images for medical staff is inefficient.

Contents of the invention

The purpose of the present invention is to provide a method and system for generating DICOM DIR files containing icon images, which can realize rapid preview of DICOM images and improve the work efficiency of medical personnel.

In order to achieve the above objects, the present invention provides the following solutions:

A method for generating DICOMDIR files containing icon images, including:

Obtain a DICOM image file; the DICOM image file includes multiple DICOM images;

Select a DICOM image and compress the DICOM image to obtain an icon image;

Determine whether the DICOM image is a grayscale image or a color image, and obtain a first judgment result;

If the first judgment result is a color image, extract the palette data of the three colors of the DICOM image; compare the icon image corresponding to the DICOM image, the height and width of the icon image, and the icon image The corresponding palette data is saved in the DICOMDIR file; among them, the three colors are red, green and blue respectively; the icon image is saved in the icon image sequence tag;

If the first judgment result is a grayscale image, save the icon image corresponding to the DICOM image and the height and width of the icon image in a DICOMDIR file;

Determine whether all DICOM images in the DICOM image file have been selected, and obtain a second judgment result;

If the second judgment result is yes, a DICOMDIR file containing the icon image is obtained;

If the second judgment result is no, return to step "select a DICOM image and compress the DICOM image to obtain an icon image."

Optionally, compressing the DICOM image to obtain an icon image specifically includes:

Get the default width of the image icon;

Extract the width and height of the DICOM image, and determine the aspect ratio based on the width and height of the DICOM image;

Calculate the height of the image icon according to the preset width of the image icon and the aspect ratio;

The DICOM image is compressed according to the preset width of the image icon and the height of the image icon to obtain an icon image.

Optionally, determining whether the DICOM image is a grayscale image or a color image specifically includes:

Extract photometric interpretability information of the DICOM image;

Determine whether the DICOM image is a grayscale image or a color image based on the photometric interpretability information;

in,

The color images include 24-bit true color images, JPEG compressed color images and color images with color palettes;

When the photometric interpretation information is "MONOCHROME1" or "MONOCHROME2", the DICOM image is a grayscale image;

When the photometric interpretation information is "RGB", the DICOM image is a 24-bit true color image;

When the photometric interpretation information is "YBR_FULL" or "YBR_FULL_422", the DICOM image is a JPEG compressed color image;

When the photometric interpretation information is "PALETTE COLOR", the DICOM image is a color image with a palette.

Optionally, the extraction of palette data of three colors of the DICOM image specifically includes:

When the color image is a 24-bit true color image, the octree color quantization method is used to convert the 24-bit true color image into a 256-color color image to obtain the first color image, and then extract the Palette data for three colors;

When the color image is a JPEG compressed color image, the JPEG compressed color image is first converted into a 24-bit true color image, and then converted into a 256-color color image using an octree color quantization method to obtain a second color image. , and then extract the palette data of the three colors of the second color image;

When the color image is a color image with a palette, palette data of three colors of the color image with a palette is extracted.

optional,

The step of saving the icon image corresponding to the DICOM image, the height and width of the icon image, and the palette data corresponding to the icon image in the DICOMDIR file also includes:

Determine that the photometric interpretability information of the icon image corresponding to the DICOM image is PALETTE COLOR, and save the photometric interpretability information of the icon image corresponding to the DICOM image in the DICOMDIR file;

After saving the icon image corresponding to the DICOM image and the height and width of the icon image in the DICOMDIR file, it also includes:

The photometric interpretability information of the icon image corresponding to the DICOM image is determined to be MONOCHROME2, and the photometric interpretability information of the icon image corresponding to the DICOM image is saved in the DICOMDIR file.

The present invention also provides a DICOMDIR file generation system containing icon images, including:

DICOM image file acquisition module, used to acquire DICOM image files; the DICOM image files include multiple DICOM images;

An image compression module, used to select a DICOM image and compress the DICOM image to obtain an icon image;

The first judgment module is used to judge whether the DICOM image is a grayscale image or a color image, and obtain a first judgment result; when the first judgment result is a color image, execute the color image processing module; in the first judgment When the result is a grayscale image, execute the grayscale image processing module;

The color image processing module is used to extract palette data of three colors of the DICOM image; convert the icon image corresponding to the DICOM image, the height and width of the icon image, and the icon image corresponding to the icon image. The palette data is saved in the DICOMDIR file; the three colors are red, green and blue respectively; the icon image is saved in the icon image sequence tag;

The grayscale image processing module is used to save the icon image corresponding to the DICOM image and the height and width of the icon image in a DICOMDIR file;

The second judgment module is used to judge whether all DICOM images in the DICOM image file have been selected and obtain the second judgment result; when the second judgment result is yes, execute the DICOMDIR file generation module. When the judgment result is no, execute the image compression module;

The DICOMDIR file generation module is used to obtain a DICOMDIR file containing an icon image.

Optional, the image compression module specifically includes:

The preset width acquisition unit is used to obtain the preset width of the image icon;

An aspect ratio determination unit, configured to extract the width and height of the DICOM image, and determine the aspect ratio based on the width and height of the DICOM image;

An image icon height calculation unit, configured to calculate the image icon height according to the preset width of the image icon and the aspect ratio;

An icon image generating unit is configured to compress the DICOM image according to the preset width of the image icon and the height of the image icon to obtain an icon image.

Optionally, the first judgment module specifically includes:

A photometric interpretability information extraction unit, used to extract photometric interpretability information of the DICOM image;

A first judgment unit configured to judge whether the DICOM image is a grayscale image or a color image based on the photometric interpretation information;

in,

The color images include 24-bit true color images, JPEG compressed color images and color images with color palettes;

When the photometric interpretation information is "MONOCHROME1" or "MONOCHROME2", the DICOM image is a grayscale image;

When the photometric interpretation information is "RGB", the DICOM image is a 24-bit true color image;

When the photometric interpretation information is "YBR_FULL" or "YBR_FULL_422", the DICOM image is a JPEG compressed color image;

When the photometric interpretation information is "PALETTE COLOR", the DICOM image is a color image with a palette.

Optionally, the color image processing module specifically includes:

The first palette data generating unit is configured to use an octree color quantization method to convert the 24-bit true color image into a 256-color color image when the color image is a 24-bit true color image to obtain the first color image. image, and then extract palette data of three colors of the first color image;

The second palette data generation unit is configured to, when the color image is a JPEG compressed color image, first convert the JPEG compressed color image into a 24-bit true color image, and then convert it using an octree color quantization method. For a 256-color color map, obtain a second color map, and then extract palette data of three colors of the second color map;

A third palette data generating unit is configured to extract palette data of three colors of the color image with a palette when the color image is a color image with a palette.

Optionally, the system also includes:

A first photometric interpretability information saving module, configured to determine that the photometric interpretability information of the icon image corresponding to the DICOM image is PALETTE COLOR, and save the photometric interpretability information of the icon image corresponding to the DICOM image in a DICOMDIR file;

The second photometric interpretation information saving module is used to determine the photometric interpretation information of the icon image corresponding to the DICOM image as MONOCHROME2, and save the photometric interpretation information of the icon image corresponding to the DICOM image in the DICOMDIR file.

Compared with the prior art, the beneficial effects of the present invention are:

The invention proposes a method and system for generating DICOMDIR files containing icon images to obtain DICOM image files; select a DICOM image and perform compression processing on the DICOM image to obtain an icon image; determine whether the DICOM image is a grayscale image or a color image, If it is a color image, extract the palette data of the three colors of the DICOM image, and save the icon image corresponding to the DICOM image, the height and width of the icon image, and the palette data corresponding to the icon image in the DICOMDIR file; If it is a grayscale image, save the icon image corresponding to the DICOM image and the height and width of the icon image in the DICOMDIR file. When the DICOMDIR file is generated in the present invention, the icon image of the DICOM image that DICOMDIR needs to be managed is made in advance and saved in the icon image sequence tag. When the DICOM image browsing software is used to realize the icon image reading of the DICOM image managed in DICOMDIR, There is no need to open each DICOM image to read the image data to generate an icon image. The browsing software directly reads the icon image in the icon image sequence, which can realize a quick preview of the DICOM image and improve the work efficiency of medical personnel.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some of the drawings of the present invention. Embodiments, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without exerting creative efforts.

Figure 1 is a flow chart of a method for generating DICOMDIR files containing icon images in an embodiment of the present invention;

Figure 2 is a schematic diagram of a 256-color palette generated by an octree algorithm according to an embodiment of the present invention;

Figure 3 is a structural diagram of a DICOMDIR file generation system containing icon images in an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

The purpose of the present invention is to provide a method and system for generating DICOM DIR files containing icon images, which can realize rapid preview of DICOM images and improve the work efficiency of medical personnel.

In order to make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

Example

Figure 1 is a flow chart of a method for generating a DICOMDIR file containing icon images in an embodiment of the present invention. As shown in Figure 1, a method for generating a DICOMDIR file containing icon images includes:

Step 101: Obtain a DICOM image file; a DICOM image file includes multiple DICOM images;

Step 102: Select a DICOM image and compress the DICOM image to obtain an icon image;

Step 102 specifically includes:

Get the default width of the image icon;

Extract the width and height of the DICOM image, and determine the aspect ratio based on the width and height of the DICOM image;

Calculate the height of the image icon based on the preset width and aspect ratio of the image icon;

The DICOM image is compressed according to the preset width of the image icon and the height of the image icon to obtain the icon image.

Step 103: Determine whether the DICOM image is a grayscale image or a color image, and obtain a first judgment result; if the first judgment result is a color image, execute step 104; if the first judgment result is a grayscale image, execute step 105.

Step 103 specifically includes:

Extract photometric interpretability information from DICOM images;

Determine whether the DICOM image is grayscale or color based on photometric interpretation information;

in,

Color images include 24-bit true color images, JPEG compressed color images, and color images with palettes;

When the photometric interpretation information is "MONOCHROME1" (monochrome 1) or "MONOCHROME2" (monochrome 2), the DICOM image is a grayscale image;

When the photometric interpretation information is "RGB", the DICOM image is a 24-bit true color image;

When the photometric interpretation information is "YBR_FULL" or "YBR_FULL_422", the DICOM image is a JPEG compressed color image;

When the photometric interpretation information is "PALETTE COLOR" (palette color), the DICOM image is a color image with a palette.

Step 104: Extract the palette data of the three colors of the DICOM image; save the icon image corresponding to the DICOM image, the height and width of the icon image, and the palette data corresponding to the icon image in the DICOMDIR file; among them, three The colors are red, green, and blue; the icon image is saved in the icon image sequence tag.

At the same time, it is determined that the photometric interpretability information of the icon image corresponding to the DICOM image is PALETTE COLOR, and the photometric interpretability information of the icon image corresponding to the DICOM image is saved in the DICOMDIR file.

Step 104 specifically includes:

When the color image is a 24-bit true color image, the octree color quantization method is used to convert the 24-bit true color image into a 256-color color image to obtain the first color image, and then extract the toning of the three colors of the first color image. board data;

When the color image is a JPEG-compressed color image, the JPEG-compressed color image is first converted into a 24-bit true color image, and then converted into a 256-color color image using the octree color quantization method to obtain the second color image, and then the second color image is extracted. Palette data for three colors of a two-color image;

In the color image, for a color image with a palette, the palette data of three colors of the color image with a palette is extracted.

Step 105: Save the icon image corresponding to the DICOM image and the height and width of the icon image in the DICOMDIR file.

At the same time, it is determined that the photometric interpretability information of the icon image corresponding to the DICOM image is MONOCHROME2, and the photometric interpretability information of the icon image corresponding to the DICOM image is saved in the DICOMDIR file.

Step 106: Determine whether all DICOM images in the DICOM image file have been selected, and obtain a second judgment result; if the second judgment result is yes, execute step 107; if the second judgment result is no, return to step 102.

Step 107: Generate DICOMDIR file.

specific,

The invention proposes a method for generating DICOMDIR files containing icon images, including:

(1) Open the DICOM image files in the specified folder where the DICOMDIR file needs to be generated one by one, read the (0028, 0004) (Photometric Interpretation) tag value in the DICOM image file, and obtain the photometric interpretation information of the DICOM image. , determine whether the generated icon image is a grayscale image or a 256-color color image based on the photometric interpretation information. Read the value in the (0028, 0011) (Columns, columns) tag in the DICOM image file header information to obtain the width of the DICOM image, and read the (0028, 0010) (Rows, rows) tag in the DICOM image file header information. value in, get the height of the DICOM image, and get the width and height ratio of the DICOM image. When generating the icon image, the aspect ratio of the icon image needs to be consistent with the DICOM image.

(2) If the photometric interpretation information of the DICOM image obtained in (1) is 'MONOCHROME1' or 'MONOCHROME2', it means that the DICOM image is a grayscale image, and an icon image of the grayscale image needs to be generated. Read the first frame image in the DICOM image file into the memory, and generate grayscale icon image data according to the width and height ratio and save it to the memory.

If the photometric interpretation information of the DICOM image obtained in (1) is RGB, it means that the image is a 24-bit true color image, and the 24-bit true color image data is used to generate 256 colors of red, green, and blue tones. Swatch data.

Among them, the 24-bit true color image is converted into a 256-color color image. Commonly used algorithms include the popular color algorithm, the median segmentation algorithm, the octree color quantization algorithm, etc. As shown in Figure 2, the octree color quantization algorithm The basic idea of the algorithm is to distribute the RGB color values used in the image into a layered octree. The depth of the octree can reach 9 levels, that is, the root node level plus 8 levels of nodes representing each bit of the 8-bit R, G, and B values. Lower node layers correspond to the bits of the less important RGB values (bits to the right). The leaf node encodes the number of pixels and the values of the R, G, and B color components; the middle nodes form the path from the top layer to the leaf node. This is an efficient storage method that can store the colors that appear in the image and the number of times they appear, and does not waste memory to store colors that do not appear in the image. The octree color quantization algorithm is highly efficient and effective.

In order to generate high-quality icon images, the octree color quantization algorithm is used to convert the 24-bit true color image into a 256-color color image to obtain 256-color red, green, and blue palette data, and according to a certain size Size generated icon image data and saved to memory.

If the photometric interpretation information of the DICOM image obtained in (1) is YBR_FULL, YBR_FULL_422, the DICOM image is a JPEG compressed color image. Read the color image data of the first frame of the DICOM image file corresponding to the icon image into the memory and convert it into a 24-bit true color image. The octree color quantization algorithm is also used to convert the 24-bit true color image into a 256-color color image. Obtain 256-color palette data of red, green, and blue, and generate icon image data according to a certain size and save it to memory.

If the photometric interpretation information PALETTE COLOR of the DICOM image obtained in (1) is obtained, the DICOM image is a color image with a palette. Read the (0028,1201)RedPalette Color Lookup Table Data (red palette color lookup table data) and (0028,1202)GreenPalette Color Lookup Table Data (green palette color) in the header of the DICOM image file corresponding to the icon image. Lookup table data), (0028,1203) BluePalette Color Lookup Table Data (blue palette color lookup table data) tag, after obtaining the palette data of the red, green and blue colors of the palette. Read the first frame of the DICOM image file corresponding to the icon image and generate the icon image data according to a certain size and save it to the memory.

(3) After all DICOM images in the specified DICOM image folder are processed, use the DICOMDIR creation function to generate a DICOMDIR file. After inserting the icon image sequence (0088,0200) tag into the header of the created DICOMDIR file, add the icon image sequence (0088 ,0200) tag, write the photometric interpretability (0028, 0004) tag of the icon image. If the icon image is a grayscale image, write MONOCHROME2 in the (0028, 0004) tag. If the icon image is a 256 color image, write it in ( Write PALETTE COLOR in the 0028,0004) tag, write (0028,1201), (0028,1202), (0028,1203) three tags at the same time and write the values obtained in (2) in these three tags respectively. Palette data for red, green, and blue colors. Write the image width tag (0028, 0011) in the icon image sequence (0088,0200) tag and write the image width value in the tag. Write the image height tag (0028) in the icon image sequence (0088,0200) tag. , 0010) and write the image height value in the tag. Finally, write the icon image data obtained in (2) into the (0088,0200) tag in sequence, and finally save the generated DICOMDIR file.

For example,

DICOMDIR is a variable-length mini-database file. Group(0002,xxxx) and group(0004,xxxx) are the topics, describing a 4-layer tree structure. It consists of Patient, Study, Series and Image. DICOM images saved in DICOM CD or DVD are managed through DICOMDIR files, and the DICOM image browsing software allows browsing of DICOM images managed by DICOMDIR.

(a) Specify a DICOM image folder, which contains 36 ultrasound DICOM images. Read the (0028, 0004) (Photometric Interpretation) tag values in the DICOM in the DICOM image folder one by one, and get the photometric interpretation of the icon image as 'RGB', which means that the icon image is a 24-bit color image. Read (0028 , 0011) (Columns) tag value, the number of rows of the DICOM image is 640, indicating that the width of the DICOM image is 640, read the (0028, 0010) (Rows) tag value, and the number of columns of the DICOM image is 480, indicating the icon The height of the image is 480. The calculated aspect ratio of the DICOM image is 4:3.

(b) Read the first frame of the DICOM image into memory, use the octree color quantization algorithm to convert the 24-bit true color image into a 256-color color image, and obtain a 256-color palette of red, green, and blue. After data, set the icon image width to 128. Based on the aspect ratio of the DICOM image obtained in (a), the height of the image is calculated to be 96. According to the width and height values of the icon image, use the first frame of 24-bit true color image in the memory to generate 256-color 128X96 icon image data and save it to the memory.

(c) After processing 36 DICOM images in a loop, call the DICOMDIR creation function to generate a DICOMDIR file. According to the DICOM standard, insert the icon image sequence (0088,0200) tag in the header of the DICOMDIR file. Because the DICOM image is a color image and the icon image is a 256-color color image, write the icon image sequence (0088,0200) tag in the header. When the photometric interpretation of the icon image is (0028, 0004) label, the (0028, 0004) label value is written as PALETTECOLOR, and the three labels (0028,1201), (0028,1202), (0028,1203) are written at the same time and respectively Write the red, green, and blue palette data obtained in (b) into these three tags. The width of the icon image is 128. When the width tag (0028, 0011) of the icon image is written in the icon image sequence (0088, 0200) tag, the (0028, 0011) tag value is 128. The height of the icon image is 96. When the height tag (0028, 0010) of the icon image is written in the icon image sequence (0088, 0200) tag, the (0028, 0010) tag value is 96.

Finally save the generated DICOMDIR file.

Figure 3 is a structural diagram of a DICOMDIR file generation system containing icon images in an embodiment of the present invention. As shown in Figure 3, a DICOMDIR file generation system containing icon images includes:

The DICOM image file acquisition module 201 is used to acquire DICOM image files; DICOM image files include multiple DICOM images.

The image compression module 202 is used to select a DICOM image and compress the DICOM image to obtain an icon image.

Image compression module 202 specifically includes:

The preset width acquisition unit is used to obtain the preset width of the image icon;

An aspect ratio determination unit is used to extract the width and height of the DICOM image, and determine the aspect ratio based on the width and height of the DICOM image;

The image icon height calculation unit is used to calculate the image icon height according to the preset width and aspect ratio of the image icon;

The icon image generation unit is used to compress the DICOM image according to the preset width and height of the image icon to obtain an icon image.

The first judgment module 203 is used to judge whether the DICOM image is a grayscale image or a color image, and obtain a first judgment result; when the first judgment result is a color image, execute the color image processing module 204; when the first judgment result is a grayscale image When the image is drawn, the grayscale image processing module 205 is executed.

The first judgment module 203 specifically includes:

Photometric interpretability information extraction unit, used to extract photometric interpretability information of DICOM images;

The first judgment unit is used to judge whether the DICOM image is a grayscale image or a color image based on the photometric interpretation information;

in,

Color images include 24-bit true color images, JPEG compressed color images, and color images with palettes;

When the photometric interpretation information is "MONOCHROME1" or "MONOCHROME2", the DICOM image is a grayscale image;

When the photometric interpretation information is "RGB", the DICOM image is a 24-bit true color image;

When the photometric interpretation information is "YBR_FULL" or "YBR_FULL_422", the DICOM image is a JPEG compressed color image;

When the photometric interpretation information is "PALETTE COLOR", the DICOM image is a color image with a palette.

The color image processing module 204 is used to extract the palette data of three colors of the DICOM image; save the icon image corresponding to the DICOM image, the height and width of the icon image, and the palette data corresponding to the icon image in the DICOMDIR file ; Among them, the three colors are red, green and blue respectively; the icon image is saved in the icon image sequence tag.

The color image processing module 204 specifically includes:

The first palette data generation unit is used to convert the 24-bit true color image into a 256-color color image using the octree color quantization method when the color image is a 24-bit true color image, to obtain the first color image, and then extract Palette data for the three colors of the first color image;

The second palette data generation unit is used to convert the JPEG compressed color image into a 24-bit true color image when the color image is a JPEG compressed color image, and then convert it into a 256-color image using the octree color quantization method. image, obtain the second color image, and then extract the palette data of the three colors of the second color image;

The third palette data generating unit is configured to extract palette data of three colors of the color image with a palette from the color image.

The grayscale image processing module 205 is used to save the icon image corresponding to the DICOM image and the height and width of the icon image in the DICOMDIR file.

The second judgment module 206 is used to judge whether all DICOM images in the DICOM image file have been selected to obtain the second judgment result; when the second judgment result is yes, the DICOMDIR file generation module 207 is executed, and when the second judgment result is no When, the image compression module 202 is executed.

DICOMDIR file generation module 207, used to generate DICOMDIR files.

The DICOMDIR file generation system containing icon images provided by the present invention also includes:

The first photometric interpretation information saving module is used to determine the photometric interpretation information of the icon image corresponding to the DICOM image as PALETTE COLOR, and save the photometric interpretation information of the icon image corresponding to the DICOM image in the DICOMDIR file.

The second photometric interpretability information saving module is used to determine the photometric interpretability information of the icon image corresponding to the DICOM image as MONOCHROME2, and save the photometric interpretability information of the icon image corresponding to the DICOM image in the DICOMDIR file.

As for the system disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple. For relevant details, please refer to the description in the method section.

This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and the core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the present invention There will be changes in the specific implementation methods and application scope of the ideas. In summary, the contents of this description should not be construed as limitations of the present invention.

Claims (10)

1. A DICOMDIR file generating method including an icon image, comprising:

acquiring a DICOM image file; the DICOM image file includes a plurality of DICOM images;

selecting a DICOM image, and compressing the DICOM image to obtain an icon image;

judging whether the DICOM image is a gray level image or a color image, and obtaining a first judging result;

extracting palette data of three colors of the DICOM image if the first judging result is a color chart; storing an icon image corresponding to the DICOM image, the height and the width of the icon image and palette data corresponding to the icon image in a DICOMDIR file; wherein the three colors are red, green and blue respectively;

if the first judging result is a gray level image, storing an icon image corresponding to the DICOM image and the height and width of the icon image in a DICOMDIR file;

judging whether all DICOM images in the DICOM image file are selected or not to obtain a second judging result;

if the second judgment result is yes, obtaining a DICOMDIR file containing the icon image;

if the second judgment result is negative, returning to the step of selecting a DICOM image, and performing compression processing on the DICOM image to obtain an icon image.

2. The method for generating a DICOMDIR file containing an icon image according to claim 1, wherein the compressing the DICOM image to obtain the icon image specifically comprises:

acquiring a preset width of an image icon;

extracting the width and the height of the DICOM image, and determining the aspect ratio according to the width and the height of the DICOM image;

calculating the height of the image icon according to the preset width of the image icon and the aspect ratio;

and compressing the DICOM image according to the preset width of the image icon and the height of the image icon to obtain an icon image.

3. The method for generating a DICOMDIR file containing an icon image according to claim 2, wherein the determining whether the DICOM image is a gray scale image or a color image comprises:

extracting luminosity interpretation degree information of the DICOM image;

judging whether the DICOM image is a gray level image or a color image according to the luminosity interpretation degree information;

wherein,,

the color map comprises a 24-bit true color image, a JPEG compressed color image and a color image with a palette;

when the luminosity interpretation information is "MONOCHROME1" or "MONOCHROME2", the DICOM image is a gray scale image;

when the luminosity interpretation information is 'RGB', the DICOM image is a 24-bit true color image;

when the luminosity interpretation information is YBR_FULL or YBR_FULL_422, the DICOM image is a JPEG compressed color image;

when the luminosity interpretation information is "PALETTE COLOR", the DICOM image is a COLOR image with a PALETTE.

4. The method for generating a DICOMDIR file containing an icon image according to claim 3, wherein extracting palette data of three colors of the DICOM image comprises:

when the color image is a 24-bit true color image, converting the 24-bit true color image into a 256-color image by adopting an octree color quantization method to obtain a first color image, and extracting palette data of three colors of the first color image;

when the color image is a JPEG compressed color image, converting the JPEG compressed color image into a 24-bit true color image, converting the 24-bit true color image into a 256-color image by adopting an octree color quantization method to obtain a second color image, and extracting palette data of three colors of the second color image;

and extracting palette data of three colors of the color image with the palette when the color image is the color image with the palette.

5. The method for generating a DICOMDIR file containing an icon image as recited in claim 4, wherein,

the storing the icon image corresponding to the DICOM image, the height and width of the icon image and the palette data corresponding to the icon image in a DICOMDIR file further comprises:

determining that the luminosity interpretation degree information of the icon image corresponding to the DICOM image is PALETTE COLOR, and storing the luminosity interpretation degree information of the icon image corresponding to the DICOM image in a DICOMDIR file;

and storing the icon image corresponding to the DICOM image and the height and width of the icon image in a DICOMDIR file, and then further comprising:

determining that the luminosity interpretation information of the icon image corresponding to the DICOM image is MONOCHROME2, and storing the luminosity interpretation information of the icon image corresponding to the DICOM image in a DICOMDIR file.

6. A DICOMDIR file generating system including an icon image, comprising:

the DICOM image file acquisition module is used for acquiring a DICOM image file; the DICOM image file includes a plurality of DICOM images;

the image compression module is used for selecting a DICOM image and carrying out compression processing on the DICOM image to obtain an icon image;

the first judging module is used for judging whether the DICOM image is a gray level image or a color image, and obtaining a first judging result; executing a color map processing module when the first judgment result is a color map; executing a gray scale image processing module when the first judgment result is a gray scale image;

the color map processing module is used for extracting palette data of three colors of the DICOM image; storing an icon image corresponding to the DICOM image, the height and the width of the icon image and palette data corresponding to the icon image in a DICOMDIR file; wherein the three colors are red, green and blue respectively;

the gray level image processing module is used for storing the icon image corresponding to the DICOM image and the height and the width of the icon image in a DICOMDIR file;

the second judging module is used for judging whether all DICOM images in the DICOM image file are selected or not to obtain a second judging result; executing a DICOMDIR file generation module when the second judgment result is yes, and executing the image compression module when the second judgment result is no;

the DICOMDIR file generation module is used for obtaining a DICOMDIR file containing an icon image.

7. The DICOMDIR file generating system containing an icon image according to claim 6, wherein the image compression module specifically comprises:

the preset width acquisition unit is used for acquiring the preset width of the image icon;

an aspect ratio determining unit for extracting a width and a height of the DICOM image and determining an aspect ratio according to the width and the height of the DICOM image;

an image icon height calculating unit for calculating an image icon height according to the preset image icon width and the aspect ratio;

and the icon image generating unit is used for compressing the DICOM image according to the preset width of the image icon and the height of the image icon to obtain an icon image.

8. The DICOMDIR file generating system including an icon image according to claim 7, wherein the first judging module specifically comprises:

a luminosity interpretation information extraction unit for extracting luminosity interpretation information of the DICOM image;

the first judging unit is used for judging whether the DICOM image is a gray level image or a color image according to the luminosity interpretation information;

wherein,,

the color map comprises a 24-bit true color image, a JPEG compressed color image and a color image with a palette;

when the luminosity interpretation information is "MONOCHROME1" or "MONOCHROME2", the DICOM image is a gray scale image;

when the luminosity interpretation information is 'RGB', the DICOM image is a 24-bit true color image;

when the luminosity interpretation information is YBR_FULL or YBR_FULL_422, the DICOM image is a JPEG compressed color image;

when the luminosity interpretation information is "PALETTE COLOR", the DICOM image is a COLOR image with a PALETTE.

9. The DICOMDIR file generating system containing icon images according to claim 8, wherein the color map processing module specifically comprises:

the first palette data generating unit is used for converting the 24-bit true color image into a 256-color image by adopting an octree color quantization method when the color image is the 24-bit true color image, so as to obtain a first color image, and extracting palette data of three colors of the first color image;

the second palette data generating unit is used for converting the JPEG-compressed color image into a 24-bit true color image when the color image is a JPEG-compressed color image, converting the 24-bit true color image into a 256-color image by adopting an octree color quantization method to obtain a second color image, and extracting palette data of three colors of the second color image;

and the third palette data generating unit is used for extracting palette data of three colors of the color image with the palette when the color image is the color image with the palette.

10. The DICOMDIR file generating system containing an icon image according to claim 9, wherein the system further comprises:

the first luminosity interpretation information storage module is used for determining that luminosity interpretation information of the icon image corresponding to the DICOM image is PALETTE COLOR, and storing the luminosity interpretation information of the icon image corresponding to the DICOM image in a DICOMDIR file;

and the second luminosity interpretation information storage module is used for determining that the luminosity interpretation information of the icon image corresponding to the DICOM image is MONOCHROME2 and storing the luminosity interpretation information of the icon image corresponding to the DICOM image in a DICOMDIR file.