CN107800915A - A kind of color exchange method and system based on IMAQ correction - Google Patents

Abstract

A kind of color exchange method based on IMAQ correction, its specific steps include：Client carries out standard picture collection to sample, generates sample standard image；Client is corrected and encrypted to sample standard image, generates correction file and preserves, and the sample standard image corrected after encrypting is sent into the manufacturing side；Simultaneously sample preparation is decrypted in the sample standard image of encryption by the manufacturing side；The manufacturing side carries out standard picture collection to sample preparation, generates thumbnail criteria image；Thumbnail criteria image is encrypted the manufacturing side, generates the thumbnail criteria image of encryption and is transferred to client；Client is decrypted to the thumbnail criteria image of encryption and corrects thumbnail criteria image with correction file, the thumbnail criteria image after correction is compared with sample object, if unanimously, sample sample preparation is qualified；The manufacturing side is sent sample after sample preparation is qualified and finally confirmed to client.So sample making course only needs once to post, and substantially reduces the time needed for sample preparation.

Description

A color exchange method and system based on image acquisition and correction

technical field

The invention relates to a color exchange method and system based on image acquisition and correction.

Background technique

Since the computer monitor is an RGB three-color model, while digital printing uses a CMYK four-color mixing model, there is a big difference in the color expression capabilities of the two color models. There are gaps in printing effects; moreover, different equipment has different color rendering principles, and printing and dyeing pigments are also different. This will cause the same color to appear differently on different devices. In order to check the image quality of the original version and provide proofs or basic printing parameters for official printing, the production end will first make a proof, and let the customer confirm whether the product meets the requirements through the sample.

Due to the difference in display equipment between the customer and the production side during the sample preparation process, confirmation is mainly done by mailing small samples, which is time-consuming. If the client proposes to modify the trial-produced sample, the production side needs to mail the modified sample to the client again. Repeatedly, the proofing process takes too long and affects the entire production progress. In addition, this method may lead to leakage of the customer's design ideas during the mailing process, causing huge losses to the customer.

Contents of the invention

The invention provides a color exchange method and system based on image acquisition and correction, which shortens the confirmation time of printing sample preparation and achieves consistent color correction.

The technical scheme adopted in the present invention is:

A color exchange method based on image acquisition and correction, the specific steps of which include:

The client collects the standard image of the sample to generate a standard image of the sample;

The client corrects and encrypts the sample standard image, generates and saves the calibration file, and sends the corrected and encrypted sample standard image to the production side;

The production end decrypts the encrypted sample standard image and prepares samples;

The production end collects standard images for sample preparation to generate small sample standard images;

The production end encrypts the sample standard image, generates the encrypted sample standard image and transmits it to the client;

The client decrypts the encrypted sample standard image and corrects the sample standard image with the correction file, compares the corrected sample standard image with the real sample, if they are consistent, the sample preparation is qualified;

After the sample preparation is qualified, the production side sends a small sample to the client for final confirmation. In this way, the sample preparation process only needs to be mailed once, which greatly shortens the time required for sample preparation.

Further, the specific steps for the client to collect samples include:

Confirm whether the sample is real before collecting the sample;

If it is a real object, directly carry out standard image acquisition;

If it is not the real object, judge whether the color of the sample comes from the standard color library;

If it comes from the standard color library, the production side selects the corresponding standard image in the standard color library according to the color label provided by the client for sample preparation;

If it is not from the standard color library, first print the color of the sample, and then collect the standard image.

Furthermore, both the client and the production end have a standard color library. The standard color library is collected and generated by a standard image acquisition system. The material library is composed of a series of commonly used colors printed on different materials.

Further, the specific steps of standard image correction include:

Determine whether there is a calibration file;

If there is a correction file, read the correction file and automatically adjust the image parameters of the standard image;

If there is no correction file, manually adjust the image parameters of the standard image, and record the image parameters to generate a correction file.

Further, during the standard image correction process, the action recording is performed to record the image correction code.

Further, the image parameters of the standard image correction include brightness, contrast, hue, color saturation, color balance, and reflective effect.

A color exchange system based on image acquisition and correction, characterized in that: comprising:

The standard image acquisition system is set up on the client side and the production side respectively, and is used to collect standard images of samples or small samples;

Image correction software, which is respectively set on the client end and the production end, is used to correct and encrypt and decrypt the standard image collected by the standard image acquisition system;

Standard image storage server, used for standard image transmission between client and production end.

Further, the standard image acquisition system consists of a standard light box and a standard camera.

Further, the standard image acquisition system collects the material library to generate a standard color library, and the material library is composed of a series of printed objects of commonly used colors on different materials.

Further, image correction software includes:

An action recording module, used to record the image correction code during the image correction process;

An image correction module for color correction of standard images;

The image encryption module is used to encrypt standard images.

Beneficial effects of the present invention: not only can prevent customer ideas from being plagiarized in the process of mailing small samples, but also can eliminate product color difference disputes caused by performance differences between customer and production display equipment, and greatly shorten the time spent from sample preparation to mass production. required time.

Description of drawings

Fig. 1 is the general flowchart of the present invention;

Fig. 2 is the flowchart of situation one of the present invention;

Fig. 3 is the flowchart of situation two of the present invention;

Fig. 4 is the flowchart of situation three of the present invention;

Fig. 5 is the work flowchart of image correction software of the present invention;

Fig. 6 is a schematic structural diagram of the system of the present invention;

Fig. 7 is a block diagram of the image correction software of the present invention.

Detailed ways

The present invention will be further described below in conjunction with specific examples, but the present invention is not limited to these specific implementations. Those skilled in the art will realize that the present invention covers all alternatives, modifications and equivalents as may be included within the scope of the claims.

Embodiment one

See Figure 1-5, a color exchange method based on image acquisition and correction, the specific steps include:

The client collects the standard image of the sample to generate a standard image of the sample;

The client corrects and encrypts the sample standard image, generates and saves the calibration file, and sends the corrected and encrypted sample standard image to the production side;

The production end decrypts the encrypted sample standard image and prepares samples;

The production end collects standard images for sample preparation to generate small sample standard images;

The production end encrypts the sample standard image, generates the encrypted sample standard image and transmits it to the client;

The client decrypts the encrypted sample standard image and corrects the sample standard image with the correction file, compares the corrected sample standard image with the real sample, if they are consistent, the sample preparation is qualified;

After the sample preparation is qualified, the production side sends a small sample to the client for final confirmation. In this way, the sample preparation process only needs to be mailed once, which greatly shortens the time required for sample preparation. Image encryption is to prevent customer ideas from being plagiarized.

In this embodiment, the specific steps for the client to collect samples include:

Confirm whether the sample is real before collecting the sample;

If it is a real object, directly carry out standard image acquisition;

If it is not the real object, judge whether the color of the sample comes from the standard color library;

If it comes from the standard color library, the production side selects the corresponding standard image in the standard color library according to the color label provided by the client for sample preparation;

If it is not from the standard color library, first print the color of the sample, and then collect the standard image.

In this embodiment, both the client and the production end are provided with a standard color library. The standard color library is collected and generated by the standard image acquisition system from the material library. The material library is composed of a series of commonly used colors printed on different materials.

The specific steps of standard image correction in this embodiment include:

Determine whether there is a calibration file;

If there is a correction file, read the correction file and automatically adjust the image parameters of the standard image;

If there is no correction file, manually adjust the image parameters of the standard image, and record the image parameters to generate a correction file.

In this embodiment, during the standard image correction process, action recording is performed to record the code of image correction. Image parameters for standard image correction include brightness, contrast, hue, color saturation, color balance, and reflections. Since the display device cannot show the true effect of the standard image, in order to make the visual effect similar to the actual effect, it is necessary to correct the brightness, contrast, hue, color saturation and color balance; considering that printed materials have different effects on the same color For performance, the reflective effect of the image also needs to be considered. Brightness, contrast, hue, and color saturation are basic corrections for standard images. Due to the RGB color gamut of general monitors, the ability to express printed colors is limited, and the above four corrections cannot fully express the real situation of the sample. Since digital printing is a CMYK four-color mixing model, in order to represent the actual sample as much as possible on the RGB display, it is necessary to modify the color balance. The same color has different effects on different materials, mainly due to the different reflection effects of colors on different materials, so the reflection effect is also a very important part in image correction.

The present invention can not only prevent customers' ideas from being plagiarized in the process of posting small samples, but also eliminate product color difference disputes caused by performance differences between the customer's side and the production side's display equipment, and greatly shorten the time required from sample preparation to mass production.

Embodiment two

Referring to Figure 6, a color exchange system based on image acquisition and correction includes:

The standard image acquisition system 1 is respectively set at the client end 4 and the production end 5, and is used to collect standard images of samples or small samples;

The image correction software 2 is respectively set on the client terminal 4 and the production terminal 5, and is used for correcting and encrypting and decrypting the standard image collected by the standard image collection system;

The standard image storage server 3 is used for standard image transmission between the client 4 and the production end 5 .

The standard image acquisition system 1 is composed of a standard light source box 12 and a standard camera 11 . The standard camera 11 can capture various colors of samples under standard light source conditions, and can accurately reflect the spraying effects and texture characteristics of colors on different materials.

The standard image acquisition system 1 has undergone standard color calibration, which can ensure that the standard images generated by the same sample in all standard image acquisition systems 1 provided by the platform are consistent. The system material library is composed of a series of commonly used colors printed on different materials. The standard images generated by the standard image acquisition system form the standard color library. The material library is provided to the user along with the standard image acquisition system, and the standard color library is stored in the system server of the client 4 and the production end 5 .

Image correction software 2 is the core part of this system, and image correction software 2 is mainly made up of three major modules: motion video recording module 21, image correction module 22 and image encryption module 23, see Fig. 7. The image correction module 22 is used to perform color correction on the standard image. Since the display device cannot show the real effect of the standard image, in order to make the visual effect close to the actual effect, brightness, contrast, hue, color saturation and color balance need to be corrected. Make corrections; considering that printed materials have different performances for the same color, the reflective effect of the image also needs to be considered. Brightness, contrast, hue, and color saturation are basic corrections for standard images. Due to the RGB color gamut of general monitors, the ability to express printed colors is limited, and the above four corrections cannot fully express the real situation of the sample. Since digital printing is a CMYK four-color mixing model, in order to represent the actual sample as much as possible on the RGB display, it is necessary to modify the color balance. The same color has different effects on different materials, mainly due to the different reflection effects of colors on different materials, so the reflection effect is also a very important part in image correction. The action recording module 21 is to preserve the whole process of image correction, that is, to record the code of image correction. The production end is used in the standard light box, and the standard camera is used to generate the standard image of the trial production sample and upload it to the image storage server; the customer downloads the standard image of the sample and imports it into the image correction software for correction. The actual effect of the small sample is very similar, so it can be judged that the small sample produced by the production end meets the requirements. The image encryption module 23 is to prevent the client's creativity from being plagiarized. The image correction software workflow is shown in Figure 5.

The client 4 of the present invention collects the standard image of the sample through the standard image acquisition system 1, and the client calibrates the parameters of the standard image through the image correction software 2 on the local computer to generate a correction file, so that the display effect on the local display is similar to that of the sample. , while encrypting the sample standard image. Then upload the encrypted sample standard image to the standard image storage server 3 and send it to the production end 5 . The production end decrypts the standard image of the sample with the image correction software 2 through the key provided by the client 4, and then inputs it into the printing equipment for sample preparation. The sample made is put into the standard light source box 12 provided by the platform side, and a standard camera 11 is used to generate a standard image of the sample, which is encrypted and uploaded to the image storage server 3 . The client 4 decrypts the small sample standard image provided by the production end, imports it into the image correction software 2, corrects the small sample standard image according to the correction file of the sample standard image, and then compares the display effect of the corrected small sample standard image on the local display device of client 4 and Actual samples. If the corrected small sample standard image on the display device of the client 4 is similar to the actual sample, it can be considered that the sample preparation at the production end 5 is qualified. For final confirmation, the production side can send this sample to the customer, so that the sample preparation process only needs to be mailed once, which greatly shortens the time required for sample preparation. Specifically, there are the following three situations:

Case 1, the client 4 selects a color from the material library provided by the platform, then the production side only needs to select the corresponding standard image in the standard color library according to the color number for sample preparation, as shown in Figure 2.

In the second case, the client 4 already has a color sample. First, the client puts the sample into the standard light box 12 provided by the platform, uses the standard camera 11 to generate a standard image of the sample, and corrects the image on the local display to make the display effect similar to the sample. Then, the client 4 keeps the calibration file and uploads the encrypted sample standard image to the standard image storage server 3 . After the production terminal 5 decrypts, it prepares a sample according to the standard image of the sample, and puts the trial-produced small sample into the standard image acquisition system 1 provided by the platform to generate a standard image of the small sample. On the local display at the production end, compare the two standard images. If they are similar, the sample standard image can be encrypted and then uploaded to the standard image storage server 3 . The client 4 decrypts the sample standard image provided by the production terminal 5 and imports it into the image correction software 2, corrects the sample standard image according to the correction file of the sample standard image, and then compares the display effect and Actual samples. If the corrected small sample standard image on the customer display device is similar to the real sample, it can be considered that the sample preparation at the production end is qualified, as shown in Figure 3.

Situation 3: Client 4 has no real objects, and the colors are completely generated by software. Then the client 4 needs to print out the color through the printer first, and use it as a real object, and then use the method of case 2 to operate, as shown in Figure 4.

The invention transmits the sample between the client and the production end in the form of electronic data, replacing the method of delivering samples by express delivery in the traditional proofing process, which greatly shortens the proofing time. The image correction software 2 that comes with the system corrects the standard image so that the display effect is consistent with the naked eye observation effect; the action recording module can ensure that the customer corrects the standard image of the sample according to the standard image of the sample, which is convenient for the client to confirm whether the trial sample conforms to the standard image. Require. This system can effectively avoid product color difference disputes between customers and manufacturers due to differences in display equipment, and reduce economic losses. It can correct the standard image so that its display effect is consistent with the naked eye observation; it can record the image correction steps so that the client can see the actual effect of the sample; it can encrypt the standard image to prevent plagiarism of ideas.

Claims (10)

1. a kind of color exchange method based on IMAQ correction, its specific steps include：

Client carries out standard picture collection to sample, generates sample standard image；

Client is corrected and encrypted to sample standard image, generates correction file and preserves, and will correct the sample after encrypting Product standard picture is sent to the manufacturing side；

Simultaneously sample preparation is decrypted in the sample standard image of encryption by the manufacturing side；

The manufacturing side carries out standard picture collection to sample preparation, generates thumbnail criteria image；

Thumbnail criteria image is encrypted the manufacturing side, generates the thumbnail criteria image of encryption and is transferred to client；

Client is decrypted to the thumbnail criteria image of encryption and corrects thumbnail criteria image with correction file, after correction Thumbnail criteria image is compared with sample object, if unanimously, sample sample preparation is qualified；

The manufacturing side is sent sample after sample preparation is qualified and finally confirmed to client.

A kind of 2. color exchange method based on IMAQ correction according to claim 1, it is characterised in that：Client Carrying out the specific steps of sample collection includes：

Whether first confirmatory sample is in kind before sample is acquired；

If in kind, standard picture collection is directly carried out；

If not in kind, whether the color of judgement sample comes from standard color storehouse；

If coming from standard color storehouse, the color label that the manufacturing side provides according to client selects accordingly in standard color storehouse Standard picture carries out sample preparation；

If not coming from standard color storehouse, first the color of sample is printed, then carry out standard picture collection.

A kind of 3. color exchange method based on IMAQ correction according to claim 2, it is characterised in that：Client With standard color storehouse is equipped with the manufacturing side, standard color storehouse is acquired generation to material database by standard image acquiring systems, Material database is made up of a series of printing material object of conventional colors on unlike material.

A kind of 4. color exchange method based on IMAQ correction according to claim 1, it is characterised in that：Standard drawing As the specific steps of correction include：

Judge whether correction file；

If correction file be present, correction file is read to standard picture automated graphics parameter adjustment；

If correction file is not present, to standard picture manual image parameter adjustment, and image parameter generation correction file is recorded.

A kind of 5. color exchange method based on IMAQ correction according to claim 4, it is characterised in that：Standard drawing The code of record image rectification is recorded as carrying out action in trimming process.

A kind of 6. color exchange method based on IMAQ correction according to claim 5, it is characterised in that：Standard drawing As the image parameter of correction includes brightness, contrast, form and aspect, color saturation, color balance and reflecting effect.

A kind of 7. color exchange system based on IMAQ correction, using any one of claim 1-6 based on IMAQ The color exchange method of correction, it is characterised in that：Including：

Standard image acquiring systems, client and the manufacturing side are respectively arranged at, for gathering the standard picture of sample or sample；

Image rectification software, is respectively arranged at client and the manufacturing side, for the standard drawing gathered to standard image acquiring systems Picture is corrected and encryption and decryption；

Standard picture storage server, for the standard image transfer between client and the manufacturing side.

A kind of 8. color exchange system based on IMAQ correction according to claim 7, it is characterised in that：Standard drawing As acquisition system is made up of standard light both and standard camera head.

A kind of 9. color exchange system based on IMAQ correction according to claim 7, it is characterised in that：Standard drawing As acquisition system is acquired generation standard color storehouse to material database, material database be by a series of conventional colors on unlike material Printing composition in kind.

A kind of 10. color exchange system based on IMAQ correction according to claim 7, it is characterised in that：Image Correction software includes：

Picture recording module is acted, for carrying out recording record image rectification code to image correction process；

Image correction module, for carrying out colour correction to standard picture；

Image encryption module, for normal pictures to be encrypted.