JP4457677B2 - Image processing apparatus, image processing method, and computer program - Google Patents

Description

  The present invention relates to a technique for retouching (modifying) image data.

  If image retouching software that operates on a computer is used, the brightness and contrast of image data can be corrected easily (Patent Document 1 and the like). However, the image quality deteriorates every time correction is performed. Thus, some recent retouching software can internally handle image data with a large number of gradations. Image processing is performed by representing 1 pixel (pixel) of image data with 256 gradations of 8 bits (24 bits per pixel for RGB), but 16 bits (48 bits per pixel for RGB). Image processing is performed with 65536 gradations. By using 16 bits, deterioration of image quality can be suppressed.

  The image retouching work is performed by sequentially executing various image processing such as brightness adjustment, contrast adjustment, and saturation adjustment. In all image processing, image data is handled as 16-bit gradation. Not a translation. The final output printer has 8-bit input, and 16-bit conversion causes problems such as a reduction in processing speed and increased consumption of memory resources. At present, image data is treated as 8 bits in other image processing.

JP 2000-331180 A

  In the above technique, once image data is handled as an 8-bit gradation, even if image processing is performed after that the image data is converted to a 16-bit gradation, the image quality obtained by converting the image data to 16 bits is used. There was a problem that it was not possible to improve. If the image data has an 8-bit gradation, the amount of information of the image falls to 8 bits, and after that, even if the image data is handled as a 16-bit gradation, an increase in the information amount of the image cannot be expected. It is.

  The problem to be solved by the present invention is to prevent deterioration in image quality in a retouching operation in which image processing that handles image data as 16-bit gradation and image processing that handles as 8-bit gradation are mixed.

  As means for solving at least a part of the problems described above, the following configuration is adopted.

The first image processing apparatus of the present invention includes:
In the image processing apparatus that modifies the input image data by sequentially executing two or more image processes selected from a plurality of image processes prepared in advance for the input image data,
Each of the plurality of image processes is a first number or a second number smaller than the first number, depending on the type of image processing, in which the number of gradation bits representing pixels of image data that can be handled It is configured to be able to take
Layer forming means for forming a layer for reflecting image processing on the input image data;
Image processing designating means for receiving an operation command from an operator and designating predetermined image processing selected from the plurality of image processing for the input image data;
The number of gradation bits for determining whether the predetermined number of image data specified by the image processing specifying means handles the first number or the second number of image data as the number of bits of the gradation A determination means;
When it is determined by the gradation bit number determination means that the predetermined image processing is to handle the image data having the first number, the predetermined image processing is executed on the input image data. First image processing execution means;
A second for causing the layer to execute the predetermined image processing when it is determined by the gradation bit number determining means that the predetermined image processing is to handle the image data having the second number; Image processing execution means;
And combining means for superimposing the layer on the input image data to create composite image data.

  According to the first image processing apparatus having the above-described configuration, a layer is formed for input image data. For the input image data, the number of gradation bits representing pixels is a first number (> The second number) of image processing is executed, and for the layer, the image processing of the type whose bit number is the second number is executed. According to the image composition means, composite image data is created by superimposing the layers on the input image data. For this reason, image processing that handles a first number of image data with a large number of gradation bits is executed in advance, and then a second number of image data with a small number of gradation bits depending on the layer. Is executed. Therefore, since image processing classified into a large bit number gradation is not executed using image data converted from a small bit number gradation, image processing corresponding to a large bit number gradation is possible. The original performance can be demonstrated. As a result, it is possible to prevent the image quality from being deteriorated.

In the first image processing apparatus,
The layer forming means is configured to form the first layer and the second layer in the order from bottom to top in superposition,
The second image processing execution means includes
Processing determination means for determining whether or not the predetermined image processing is of a type relating to a decoration on which a new image is placed;
It is determined by the gradation bit number determining means that the predetermined image processing is to handle image data that is the second number, and the predetermined image processing is a type related to the decoration by the processing determining means. Means for executing the predetermined image processing on the first layer when it is determined that the first layer is not,
It is determined by the gradation bit number determining means that the predetermined image processing is to handle image data that is the second number, and the predetermined image processing is a type related to the decoration by the processing determining means. And a means for causing the second layer to execute the predetermined image processing.

  According to this configuration, even in image processing that handles image data having the same second number of bits of gradation, the second layer for image processing of a type related to decoration on which a new image is placed, and a type related to the decoration The execution destination is distinguished from the first layer for image processing other than the above. The type of image processing related to decoration hides at least a part of the input image data on which the new image is located, and if other image processing is performed thereafter, the effect does not reach the input image data. there is a possibility. According to the above configuration, since image processing other than the type related to the decoration is first executed in the first layer which is a lower layer, the effect of these image processing is not impaired by the type of image processing related to the decoration.

The second image processing apparatus of the present invention is
In the image processing apparatus that modifies the input image data by sequentially executing two or more image processes selected from a plurality of image processes prepared in advance for the input image data,
Each of the plurality of image processes is a first number or a second number smaller than the first number, depending on the type of image processing, in which the number of gradation bits representing pixels of image data that can be handled It is configured to be able to take
Layer forming means for forming a plurality of layers for reflecting image processing on the input image data;
Image processing designating means for receiving an operation command from an operator and designating predetermined image processing selected from the plurality of image processing for the input image data;
The number of gradation bits for determining whether the predetermined number of image data specified by the image processing specifying means handles the first number or the second number of image data as the number of bits of the gradation A determination means;
When it is determined by the gradation bit number determination means that the predetermined image processing is to handle the image data having the first number, the lowest layer of the plurality of layers First image processing execution means for executing predetermined image processing;
When it is determined by the gradation bit number determination means that the predetermined image processing is to handle the image data having the second number, a layer other than the lowest layer among the plurality of layers Second image processing execution means for executing the predetermined image processing;
And combining means for generating composite image data by superimposing the plurality of layers in the order from bottom to top on the input image data.

  According to the second image processing apparatus having the above-described configuration, a plurality of layers are formed for input image data. The number of bits of gradation representing pixels for the lowest layer among the layers. Is the first number (> second number), and for the layers other than the lowest layer, the type of image processing is executed with the bit number being the second number. . According to the image composition means, composite image data is created by superimposing the plurality of layers in the order from bottom to top on the input image data. For this reason, image processing that handles a first number of image data with a large number of gradation bits is executed in a batch, and then an image that handles a second number of image data with a small number of gradation bits. Processing will be executed. Therefore, since image processing classified into a large bit number gradation is not executed using image data converted from a small bit number gradation, image processing corresponding to a large bit number gradation is possible. The original performance can be demonstrated. As a result, it is possible to prevent the image quality from being deteriorated.

In the second image processing apparatus,
The layer forming means is configured to form the first layer, the second layer, and the third layer in the order from bottom to top in superposition,
The first image processing execution means is configured to cause the first layer to execute the predetermined image processing.
The second image processing execution means includes
Processing determination means for determining whether or not the predetermined image processing is of a type relating to a decoration on which a new image is placed;
It is determined by the gradation bit number determining means that the predetermined image processing is to handle image data that is the second number, and the predetermined image processing is a type related to the decoration by the processing determining means. Means for executing the predetermined image processing on the second layer when it is determined that the second layer is not,
It is determined by the gradation bit number determining means that the predetermined image processing is to handle image data that is the second number, and the predetermined image processing is a type related to the decoration by the processing determining means. And a means for causing the third layer to execute the predetermined image processing.

  According to this configuration, even in image processing that handles image data having the same second number of gradation bits, the third layer for image processing of a type related to decoration on which a new image is placed, and a type related to the decoration The execution destination is distinguished from the second layer for image processing other than the above. The type of image processing related to decoration hides at least a part of the input image data located below, and if other image processing is performed thereafter, the effect may not be effective on the input image data. . According to the above configuration, since image processing other than the type related to decoration is first executed in the second layer, which is the lower layer, the effect of these image processing is not impaired by the type of image processing related to decoration.

The third image processing apparatus of the present invention
In the image processing apparatus that modifies the input image data by sequentially executing two or more image processes selected from a plurality of image processes prepared in advance for the input image data,
Each of the plurality of image processes is configured such that the number of gradation bits representing pixels of image data that can be handled can be different depending on the type of image processing,
Layer forming means for forming one or a plurality of layers for reflecting image processing on the input image data;
The plurality of image processes are classified according to the number of bits of the gradation, and the input image data is associated with a section having the largest number of bits of the gradation among the classified sections. Corresponding to each of the classified sections except for the section with the largest number of gradation bits, the layer is associated one by one so that the upper layer has a smaller number of bits for the gradation. Classification storage means for previously storing the information,
Image processing designating means for receiving an operation command from an operator and designating predetermined image processing selected from the plurality of image processing for the input image data;
Layer determination means for referring to the information stored in the classification storage means to determine which of the input image data and the layer the predetermined image processing designated by the image processing designation means corresponds to When,
Image processing execution means for executing predetermined image processing specified by the image processing specifying means on the input image data or layer determined by the layer determination means;
And combining means for generating composite image data by superimposing the layers in the order from bottom to top on the input image data.

  According to the third image processing apparatus having the above-described configuration, one or a plurality of layers are formed for the input image data, and the input image data is included in the category having a large number of gradation bits representing pixels. Image processing is executed, and image processing of other sections is executed by assigning to the plurality of layers such that the number of gradation bits is in descending order toward the upper layer. According to the image composition means, composite image data is created by superimposing the plurality of layers in the order from bottom to top on the input image data. For this reason, image processing of a type in which the number of bits of the gradation for image data that can be handled is large is executed first. Therefore, since image processing classified into a large bit number gradation is not executed using image data converted from a small bit number gradation, image processing corresponding to a large bit number gradation is possible. The original performance can be demonstrated. As a result, it is possible to prevent the image quality from being deteriorated.

The fourth image processing apparatus of the present invention is
In the image processing apparatus that modifies the input image data by sequentially executing two or more image processes selected from a plurality of image processes prepared in advance for the input image data,
Each of the plurality of image processes is configured such that the number of gradation bits representing pixels of image data that can be handled can be different depending on the type of image processing,
Layer forming means for forming a plurality of layers for reflecting image processing on the input image data;
The plurality of image processes are classified according to the number of bits of the gradation, and the plurality of layers are arranged one by one with respect to the classified sections, so that the number of bits of the gradation becomes smaller as the upper layer is formed. Classification storage means for storing in advance information associated with
Image processing designating means for receiving an operation command from an operator and designating predetermined image processing selected from the plurality of image processing for the input image data;
With reference to the information stored in the classification storage unit, it is determined which of the plurality of layers formed by the layer forming unit corresponds to the predetermined image processing specified by the image processing specifying unit Layer determination means;
Image processing execution means for executing predetermined image processing specified by the image processing specifying means on the layer determined by the layer determination means;
And combining means for generating composite image data by superimposing the plurality of layers in the order from bottom to top on the input image data.

  According to the fourth image processing apparatus having the above-described configuration, a plurality of layers are formed for the input image data, and image processing corresponding to the number of gradation bits representing pixels is performed on the upper layer for each layer. The gradation bits are assigned so that they are in descending order. According to the image composition means, composite image data is created by superimposing the plurality of layers in the order from bottom to top on the input image data. For this reason, image processing of a type in which the number of bits of the gradation for image data that can be handled is large is executed first. Therefore, since image processing classified into a large bit number gradation is not executed using image data converted from a small bit number gradation, image processing corresponding to a large bit number gradation is possible. The original performance can be demonstrated. As a result, it is possible to prevent the image quality from being deteriorated.

The first image processing method of the present invention includes:
In the image processing method for correcting the input image data by sequentially executing two or more image processes selected from a plurality of image processes prepared in advance for the input image data,
Each of the plurality of image processes is a first number or a second number smaller than the first number, depending on the type of image processing, in which the number of gradation bits representing pixels of image data that can be handled It is configured to be able to take
(A) a step of forming a layer for reflecting image processing on the input image data;
(B) receiving a command from an operator and designating a predetermined image process selected from the plurality of image processes for the input image data;
(C) a process in which the predetermined image processing specified in the process (b) determines which of the first number and the second number of image data the number of bits of the gradation is handled. When,
(D) When the predetermined image processing is determined to handle the first number of image data in the step (c), the predetermined image processing is executed on the input image data. The process of making
(E) a step of causing the layer to execute the predetermined image processing when the predetermined image processing is determined to handle the second number of image data in the step (c). When,
(F) a step of superimposing the layer on the input image data to create composite image data.

The first computer program of the present invention is:
A computer program for modifying the input image data by sequentially executing two or more image processes selected from a plurality of image processes prepared in advance for the input image data,
Each of the plurality of image processes is a first number or a second number smaller than the first number, depending on the type of image processing, in which the number of gradation bits representing pixels of image data that can be handled It is configured to be able to take
(A) a function of forming a layer for reflecting image processing on the input image data;
(B) a function of receiving an operation command from an operator and designating a predetermined image process selected from the plurality of image processes for the input image data;
(C) The function of determining whether the predetermined number of image data specified by the function (b) is to handle the first number or the second number of image data as the number of bits of the gradation. When,
(D) When it is determined by the function (c) that the predetermined image processing is to handle the first number of image data, the predetermined image processing is executed on the input image data. Function
(E) A function of causing the layer to execute the predetermined image processing when it is determined by the function (c) that the predetermined image processing handles the second number of image data. When,
(F) A function of creating a composite image data by superimposing the layer on the input image data is realized by a computer.

  Similar to the first image processing apparatus of the present invention, the first image processing method and the first computer program of the present invention use the image data converted from the gradation of the second number of bits. Since the image processing classified into gradations of the number of bits (> second number of bits) is not executed, there is an effect that deterioration in image quality can be prevented.

The second image processing method of the present invention comprises:
In the image processing method for correcting the input image data by sequentially executing two or more image processes selected from a plurality of image processes prepared in advance for the input image data,
Each of the plurality of image processes is a first number or a second number smaller than the first number, depending on the type of image processing, in which the number of gradation bits representing pixels of image data that can be handled It is configured to be able to take
(A) a step of forming a plurality of layers for reflecting image processing on the input image data;
(B) receiving a command from an operator and designating a predetermined image process selected from the plurality of image processes for the input image data;
(C) a process in which the predetermined image processing specified in the process (b) determines which of the first number and the second number of image data the number of bits of the gradation is handled. And (d) when it is determined in the step (c) that the predetermined image processing deals with the first number of image data, the lowest layer among the plurality of layers A step of executing the predetermined image processing;
(E) When it is determined in the step (c) that the predetermined image processing is to handle the second number of image data, a layer other than the lowest layer among the plurality of layers A process of executing the predetermined image processing on the image;
And (f) a step of superimposing the plurality of layers on the input image data in an order from bottom to top to create composite image data.

The second computer program of the present invention is:
A computer program for modifying the input image data by sequentially executing two or more image processes selected from a plurality of image processes prepared in advance for the input image data,
Each of the plurality of image processes is a first number or a second number smaller than the first number, depending on the type of image processing, in which the number of gradation bits representing pixels of image data that can be handled It is configured to be able to take
(A) a function of forming a plurality of layers for reflecting image processing on the input image data;
(B) a function of receiving an operation command from an operator and designating a predetermined image process selected from the plurality of image processes for the input image data;
(C) The function of determining whether the predetermined number of image data specified by the function (b) is to handle the first number or the second number of image data as the number of bits of the gradation. And (d) when it is determined by the function (c) that the predetermined image processing is to handle the first number of image data, the lowest layer among the plurality of layers A function for executing the predetermined image processing;
(E) When it is determined by the function (c) that the predetermined image processing is to handle the second number of image data, a layer other than the lowest layer among the plurality of layers A function of executing the predetermined image processing on the
(F) causing the computer to realize a function of superimposing the plurality of layers on the input image data in the order from bottom to top to create composite image data.

  Similarly to the second image processing apparatus of the present invention, the first image processing method and the second computer program of the present invention use the image data converted from the gradation of the second number of bits. Since the image processing classified into the gradation of the number of bits (> second number of bits) is not executed, it is possible to prevent the image quality from being deteriorated.

The third image processing method of the present invention is
In the image processing method for correcting the input image data by sequentially executing two or more image processes selected from a plurality of image processes prepared in advance for the input image data,
Each of the plurality of image processes is configured such that the number of gradation bits representing pixels of image data that can be handled can be different depending on the type of image processing,
(A) a step of forming one or a plurality of layers for reflecting image processing on the input image data;
(B) The plurality of image processes are classified according to the number of bits of the gradation, and the input image data is associated with a section having the largest number of bits of the gradation among the classified sections. At the same time, for each of the classified sections excluding the section with the largest number of bits of gradation, the number of bits of the gradation is reduced as the upper layer is increased by one layer. A process for storing information associated with
(C) receiving an operation command from an operator, and specifying a predetermined image process selected from the plurality of image processes for the input image data;
(D) Referring to the information stored in the step (b), it is determined whether the predetermined image processing specified in the step (c) corresponds to the input image data or the layer And the process of
(E) a step of executing predetermined image processing specified by the step (c) for the input image data or layer determined in the step (d); and (f) the step for the input image data. And a step of creating composite image data by superimposing layers in the order from bottom to top.

The third computer program of the present invention is:
A computer program for modifying the input image data by sequentially executing two or more image processes selected from a plurality of image processes prepared in advance for the input image data,
Each of the plurality of image processes is configured such that the number of gradation bits representing pixels of image data that can be handled can be different depending on the type of image processing,
(A) a function of forming one or a plurality of layers for reflecting image processing on the input image data;
(B) The plurality of image processes are classified according to the number of bits of the gradation, and the input image data is associated with a section having the largest number of bits of the gradation among the classified sections. At the same time, for each of the classified sections excluding the section with the largest number of bits of gradation, the number of bits of the gradation is reduced as the upper layer is increased by one layer. A function for storing information associated with the information in advance;
(C) a function of receiving an operation command from an operator and designating a predetermined image process selected from the plurality of image processes for the input image data;
(D) Referring to the information stored by the function (b), it is determined which of the input image data and the layer the predetermined image processing designated by the function (c) corresponds to. Function to
(E) a function for executing predetermined image processing specified by the function (c) on the input image data or layer determined by the function (d); and (f) the function for the input image data. It is characterized by having a computer realize the function of creating composite image data by overlaying layers in the order from bottom to top.

  Similar to the third image processing apparatus of the present invention, the third image processing method and the third computer program of the present invention use the image data converted from the gradation of the small bit number, Since the image processing classified into the keys is not executed, the image quality can be prevented from being deteriorated.

The fourth image processing method of the present invention is
In the image processing method for correcting the input image data by sequentially executing two or more image processes selected from a plurality of image processes prepared in advance for the input image data,
Each of the plurality of image processes is configured such that the number of gradation bits representing pixels of image data that can be handled can be different depending on the type of image processing,
(A) a step of forming a plurality of layers for reflecting image processing on the input image data;
(B) Classifying the plurality of image processings by the number of bits of the gradation, the plurality of layers one by one for each of the classified sections, and the number of bits of the gradation being higher in the upper layer A process of pre-storing information associated with the information so as to be smaller;
(C) receiving an operation command from an operator, and specifying a predetermined image process selected from the plurality of image processes for the input image data;
(D) Referring to the information stored in the step (b), the predetermined image processing specified in the step (c) corresponds to any of the plurality of layers formed in the step (b). The process of determining whether or not
(E) a step of executing predetermined image processing specified by the step (c) for the layer determined by the step (d); and (f) the plurality of layers for the input image data. And a step of creating composite image data by superimposing them in the order from bottom to top.

The fourth computer program of the present invention is:
A computer program for modifying the input image data by sequentially executing two or more image processes selected from a plurality of image processes prepared in advance for the input image data,
(A) a function of forming a plurality of layers for reflecting image processing on the input image data;
(B) Classifying the plurality of image processings by the number of bits of the gradation, the plurality of layers one by one for each of the classified sections, and the number of bits of the gradation being higher in the upper layer A function for pre-storing information associated with a smaller size;
(C) a function of receiving an operation command from an operator and designating a predetermined image process selected from the plurality of image processes for the input image data;
(D) With reference to the information stored by the function (b), the predetermined image processing specified by the function (c) corresponds to any of the plurality of layers formed by the function (b). A function to determine whether or not
(E) a function for executing predetermined image processing specified by the function (c) on the layer determined by the function (d); and (f) the plurality of layers for the input image data. It is characterized by having a computer realize the function of creating composite image data by superimposing them in the order from bottom to top.

  Similarly to the fourth image processing apparatus of the present invention, the fourth image processing method and the fourth computer program of the present invention use image data converted from a gradation having a small number of bits to generate a large number of bits. Since image processing classified into gradations is not executed, there is an effect that deterioration in image quality can be prevented.

  The recording medium of the present invention is characterized by a computer-readable recording medium on which the first to fourth computer programs of the present invention are recorded. This recording medium has the same operation and effect as each computer program of the present invention.

  The present invention includes other aspects as follows. The first aspect is an aspect as a program supply apparatus that supplies any one of the first to fourth computer programs of the present invention via a communication path. In this first aspect, the above-described method and apparatus are realized by placing a computer program on a server or the like on a computer network, downloading a necessary program to a computer via a communication path, and executing the program. Can do.

The best mode for carrying out the present invention will be described based on examples. This embodiment will be described in the following order.
(I) First embodiment:
A. Device configuration:
B. Computer processing:
B-1. Overall processing:
B-2. Retouching process:
C. Action / effect:
(II) Second embodiment:
(III) Other embodiments:

(I) First embodiment:
A. Device configuration:
FIG. 1 is a block diagram showing a schematic hardware configuration of a computer system 10 to which the first embodiment of the present invention is applied. The computer system 10 includes a so-called personal computer (hereinafter simply referred to as a computer), and includes a CRT display 12, a printer 13, and a digital camera 14 around the computer system 10. The computer includes a computer main body 16, a keyboard 18, and a mouse 20. The computer main body 16 is equipped with a CD drive 24 for reading the contents of the CD-ROM 22.

  The computer main body 16 includes a ROM 31, a RAM 32, a display image memory 33, a mouse interface 34, a keyboard interface 35, a CDC 36, an HDC 37, a CRTC 38, a printer interface 39, an input / output device interface 40, and a CPU 30. An I / O port 41 is provided. The ROM 31 is a read-only memory that stores various built-in programs and the like. The RAM 32 is a readable / writable memory for storing various data. The display image memory 33 is a memory that stores image data of an image to be displayed on the CRT display 12.

  The mouse interface 34 is an interface that manages data exchange with the mouse 20. The keyboard interface 35 is an interface that manages key input from the keyboard 18. The CDC 36 is a CD controller that controls the CD drive (CDD) 24. The HDC 37 is a hard disk controller that controls a hard disk drive (HDD) 42. The HDD 42 stores in advance computer programs and the like which will be described later.

  The CRTC 38 is a CRT controller that controls display of an image on the CRT display 12 based on display image data stored in the display image memory 33. The printer interface 39 is an interface that controls input / output of data to / from the printer 13. The input / output machine interface 40 is an interface for controlling input / output of data to / from an externally connected input / output device, in this embodiment, for example, a digital camera 14 connected by USB (Universal Serial Bus). The I / O port 41 has a serial output port, and is connected to a modem 44, and is connected to a public telephone line 46 via the modem 44. The computer main body 16 is connected to an external network via a modem 44 and can be connected to a specific server 47.

  The digital camera 14 is a camera that records image data in which one pixel is expressed with a gradation of 8 bits to 16 bits. By saving in the “RAW mode” saving format, it is possible to obtain image data expressed in 16-bit gradation (hereinafter referred to as 16-bit color).

  In this computer system 10, the operating system is stored in the HDD 42, and when the computer main body 16 is turned on, it is loaded into a predetermined area of the RAM 32 according to the loader written in the boot block of the HDD 42. Photo retouching software (computer program) for refining photographic images (color photographic images) taken by the digital camera 14 is stored in advance in the CD-ROM 22, and the CD drive 24 is activated by starting a predetermined installation program. To the computer main body 16. The installed computer program is stored in the HDD 42, and is loaded into a predetermined area of the RAM 32 when a predetermined activation command is received.

  Various components of the present invention are realized by the CPU 30 executing some modules (described later) of the computer program. As described above, this computer program is stored in the CD-ROM 22, but instead of this, another portable recording medium (portable recording medium) such as a floppy disk, a magneto-optical disk, or an IC card. It is good also as a structure stored in. The computer program described above can also be obtained by downloading program data provided via a network from a specific server 47 connected to an external network and transferring it to the RAM 32 or the HDD 42. . The network may be the Internet or a computer program obtained by downloading from a specific homepage. Alternatively, it may be a computer program supplied in the form of an email attachment.

  Next, the state of control processing according to the photo retouching software by the computer system 10 having the hardware configuration described above will be described. FIG. 2 is a block diagram showing a state of control processing according to the photo retouching software 50 executed by the computer main body 16.

  As shown in FIG. 2, according to the photo retouching software 50 operating in the computer main body 16, first, the input module 51 performs processing for taking in image data Dpi representing a photographic image from the digital camera 14. The image data Dpi is stored in the “RAW mode” storage format by the digital camera 14 and is 16-bit color image data. Next, the modification module 52 modifies image data (hereinafter referred to as input image data) Dpi captured by the input module 51. The modification module 52 rotates, trims (cuts out) the photographic image represented by the input image data Dpi, changes the contrast and saturation of the image, and performs exposure correction and cross filter. The image can be modified by applying an effect. Each of these image processing is sequentially executed as necessary by receiving an operation command from the operator. An image of the modification process by the modification module 52 is sent to the CRT display 12 via the display driver 60 and displayed.

  The modification module 52 converts the input image data Dpi into a layer forming unit 52a, an image processing designation unit 52b, a gradation bit number determination unit 52c, a first image processing execution unit 52d, a second image processing execution unit 52e, and a combining unit 52f. A plurality of image processes are sequentially executed on the input image data Dpi. The structure of each part 52a-52f respond | corresponds to the principal part of this invention, and it demonstrates in detail later.

According to the photo retouch software 50, the printing module 53, retouching-image-data Dpo is printed it is sent to the printer 13 via the printer driver 62. Further, the modified image data Dpo is sent to the external device by the output module 54.

B. Computer processing:
B-1. Overall processing:
By executing the photo retouching software 50 by the CPU 30 of the computer main body 16, the input module 51, the modification module 52, the printing module 53, and the output module 54 described above are realized. The control process according to the photo retouching software 50 will be described in detail below. FIG. 3 is a flowchart showing a routine of this control process. This routine is started when an instruction to execute the photo retouching software 50 is given.

  As shown in the figure, when the process is started, the CPU 30 first performs a process of displaying the application window WD on the CRT display 12 (step S100). FIG. 4 is an explanatory diagram showing an initial state of the application window WD. As shown in the figure, in the processing menu field MN on the left side of the application window WD, four types of buttons BT1, BT2, BT3, and BT4 of “input”, “modify”, “print”, and “output” are directed downward. The operator clicks these buttons BT1 to BT4 with the mouse 20 in order to modify and output the photographic image taken by the digital camera 14 on the screen of the CRT display 12. Can proceed. That is, as shown in FIG. 3, after executing step 100, the CPU 30 takes in an operation command in which the buttons BT <b> 1 to BT <b> 4 are clicked with the mouse 20, and performs input processing, modification processing, printing processing corresponding to the operation command, The output process is executed in order (steps S200, S300, S400, S500).

  The input process executed in step S200 takes in image data (input image data) Dpi representing a photographic image from the digital camera 14, and corresponds to the input module 51 (FIG. 2) described above. This input image data Dpi import operation is performed in response to an operation command in which the “file” button BT11 provided on the menu bar BR1 of the application window WD shown in FIG. Specifically, “external device input” provided in a pull-down menu (not shown) opened from the “file” button BT11 is selected, then the digital camera 14 is selected as the input device, and then the file name is selected. The operation is performed in response to a series of operation commands from the mouse 20 such as selecting. The input image data Dpi thus captured is 16-bit color image data as described above, and is stored in a predetermined area of the RAM 32. At the same time, it is displayed in the work field FDW of the application window WD. .

  The modification process executed in step S300 modifies the input image data Dpi by executing image processing on the input image data Dpi, and various requirements of the present invention are realized here. Details will be described later. The modified image data Dpo subjected to the modification processing here is stored in a predetermined holder prepared in the HDD 42. This modification process corresponds to the modification module 52 (FIG. 2) described above.

  The printing process executed in step S400 outputs the modified image data Dpo created in step S300 to the printer driver as a print command. This printing process has a well-known configuration and will not be described in detail here, but a modified photographic image is printed from the printer 13. This printing process corresponds to the printing module 53 (FIG. 2) described above.

  The output process executed in step S500 is to output the modified image data Dpo created in step S300 to an external device. As a result, the modified image data Dpo representing the modified photographic image is output to a desired external device. This output process corresponds to the output module 54 (FIG. 2) described above.

B-2. Retouching process:
The modification process executed in step S300 will be described in detail below. FIG. 5 is a flowchart showing the routine of this modification process. When the process moves to this routine, as shown in the figure, the CPU 30 first performs a process of forming two layers on the input image data Dpi captured in the input process of step S200. The layer is a transparent sheet that enables color correction and pasting to place a new image (characters, clips, etc.) without modifying the original image (here, input image data Dpi). It is.

  FIG. 6 is an explanatory diagram conceptually showing two layers formed for the input image data Dpi, that is, layer 1 and layer 2. As illustrated, layers 1 and 2 have the same size as the input image data Dpi, and are superimposed on the input image data Dpi in the order of layers 1 and 2 from bottom to top. It is formed. The layer is a special one that can be applied to the pixels of the normal layer for decoration on which a new image is placed and the layer (or input image data Dpi) located below without creating a new image. Divide into things. This special layer is a so-called adjustment layer. Layer 1 immediately above the input image data Dpi is an adjustment layer, and layer 2 is a normal layer.

  Returning to FIG. 5, next, the CPU 30 performs a process of changing the application window WD displayed on the CRT display 12 for the modification process (step S320).

  FIG. 7 is an explanatory diagram showing an application window WD for modification processing. As shown in the figure, the toolbar BR2 of the application window WD for the modification processing includes “rotation / inversion”, “trimming”, “exposure correction”, “contrast adjustment”, “saturation adjustment”, “histogram correction”, The icons IC1, IC2, IC3, IC4, IC5, IC6, IC7, IC8, IC9, and IC10 for “unsharp mask”, “cross filter”, “text insertion”, and “clip art pasting” are provided. The operator can use the mouse 20 to click on any of the icons IC1 to IC10 to instruct execution of desired image processing from among ten types of image processing determined by the icons IC1 to IC10. it can.

  Icons IC1 to IC10 are instruction switches represented by marks (pictures). The instruction switch is not limited to the icons IC1 to IC10, and can be configured as a menu opened from the menu bar BR1.

  “Rotation / inversion” is image processing in which an image is rotated or inverted vertically or horizontally. “Trimming” is image processing in which only a necessary portion of an image is cut out (trimmed). “Exposure correction” is image processing that gives an effect of exposure correction to an image. “Contrast adjustment” is image processing for changing the contrast of an image. “Saturation adjustment” is image processing for changing the vividness of an image. “Histogram correction” is image processing for converting the color and brightness of an image using a histogram. “Unsharp mask” is image processing that gives the effect of applying an unsharp mask to an image. “Cross filter” is image processing that gives the effect of wearing a cross filter when taking a picture. “Character insertion” is image processing that inserts (places) characters in an image. “Clip art pasting” is image processing for pasting (mounting) a line drawing, a pattern, an image, or the like on an image.

  Returning to FIG. 5, after executing step S320, the CPU 30 captures a click operation command using the mouse 20 from the operator, and determines whether any of the icons IC1 to IC10 of the application window WD is selected. Determination is made (step S330). If it is determined that there is no selection, step S330 is repeatedly executed to wait for the selection.

  If it is determined in step S330 that any one of the icons IC1 to IC10 has been selected, the CPU 30 advances the process to step S340. In step S340, the type of image processing instructed by selection of the icons IC1 to IC10 is specified. For example, when the “rotation / inversion” icon IC1 is clicked, the type of image processing is determined to be “rotation / inversion”. When the “contrast” icon IC4 is clicked, the type of image processing is: Determined to be “contrast”.

  Thereafter, the CPU 30 performs processing for displaying the dialog box for image processing specified in step S340 (step S350). FIG. 8 is an explanatory diagram showing an example of a dialog box DBX1 for “rotation / inversion” displayed when the “rotation / inversion” icon IC1 is clicked. As shown in the figure, the dialog box DBX1 is provided with a field FD11 for displaying an original image, a field FD12 for displaying a processed image, and a field FD13 for an operation system.

  The operation field FD13 is provided with “left 90 °”, “90 ° right”, and “180 °” buttons for rotation and “up / down” and “left / right” buttons for inversion. It has been. The operator can rotate or reverse the image data by operating these buttons, and the result is displayed in the processed image display field FD12. When the “execute” button BT11 in the operation system field FD13 is clicked, the degree of rotation and inversion determined from the operation command of each button at that time is stored in the RAM 32 as a “rotation / inversion” parameter.

  The acquisition of the “rotation / reversal” parameter is realized in steps S360 and S370 of FIG. The CPU 30 captures the operator's operation command input from the image processing dialog box (step S360), and calculates a parameter for defining the degree of correction in the image processing based on the operation command. Is performed (step S370).

  FIG. 9 is an explanatory diagram showing an example of a dialog box DBX2 for “contrast” displayed when the “contrast” icon IC4 is clicked. As illustrated, the dialog box DBX2 includes an original image display field FD21, a modified image display field FD22, and an operation field FD23.

  The operation field FD23 is provided with a “contrast” slider bar SB. With this slider bar SB, the brightness range of the entire image can be adjusted. The operator adjusts the contrast of the image data by operating the slider bar SB, and the result is displayed in the processed image display field FD22. When the “execute” button BT21 in the operation field FD23 is clicked, the adjustment value of the slider bar SB at that time is stored in the RAM 32 as a “contrast” parameter in steps S360 and S370.

  Here, as described above, “rotation / inversion” and “contrast” have been described as an example of parameters acquired by the processing in steps S350 to S370. However, other image processing modules are also used for the image processing. For example, parameters relating to coordinate information indicating a region in image processing of “trimming”, parameters of effect strength in image processing of “cross filter”, and the like are obtained.

  After execution of step S370 in FIG. 5, the CPU 30 performs processing for determining the execution destination of the image processing from the type of image processing specified in step S340 (step S380). For this determination, a classification table that determines the execution destination of various image processes is used. This classification table is written in advance in the photo retouching software, and is transferred to and stored in the RAM 32 after the photo retouching software is activated.

  FIG. 10 is an explanatory diagram showing an example of the classification table TBL1. As shown in the figure, the classification table TBL1 is composed of “type” and “execution destination” item data DT1 and DT2. In the item data DT1 of “Type”, image processing that can be executed by the photo retouching software, that is, “rotation / inversion”, “trimming”, “exposure correction”, “contrast adjustment”, “contrast adjustment”, “ Saturation adjustment, “histogram correction”, “unsharp mask”, “cross filter”, “text insertion”, and “clip art pasting” are stored in this order. Thus, in the item data DT2 of “execution destination”, input image data Dpi or layer (any one of the above-described layer 1 and layer 2) corresponding to each image processing is described.

  The above 10 types of image processing are realized by individual modules in the computer program, but each module supports 16-bit handling of image data as 16-bit color (one pixel is expressed by 16-bit gradation). And those that handle image data as 8-bit color (representing one pixel with 8-bit gradation). This is a software design specification for each image processing. Considering the contribution to the image quality accuracy by supporting 16 bits, the degree of deterioration of operation comfort from the viewpoint of processing speed and resources, etc. It is determined. Specifically, work that requires sufficient image quality and information amount, such as exposure correction, contrast, and saturation adjustment, in other words, work that is necessary to lay the foundation of an image is 16-bit compatible; Bit support. Specifically, in this embodiment, each process of “rotation / inversion”, “trimming”, “exposure correction”, “contrast adjustment”, “saturation adjustment”, and “histogram correction” corresponds to 16 bits, Each process of “unsharp mask”, “cross filter”, “text insertion”, and “clip art pasting” is 8-bit compatible.

In the classification table TBL1, the execution destination for the 16-bit image processing is defined as input image data Dpi. The execution destination of the 8-bit image processing is divided depending on whether or not the image processing is related to decoration on which a new image is placed. That is, the execution destination for image processing related to 8-bit processing and the decoration is determined to be layer 2 of the layers formed in step S310, and is executed for image processing other than 8-bit processing and decoration. The destination is defined as layer 1 of the layers formed in step S310. In this embodiment, since the image processing of “character insertion” and “clip art pasting” is processing for placing a new image, it is associated with layer 2 and the remaining 8-bit image processing. Each of the “unsharp mask” and “cross filter” image processing is associated with layer 1.

  In step S380, in detail, the item data DT1 of “type” in the classification table TBL1 is searched for a match with the type of image processing specified in step S340, and the type of image processing corresponding to the type is matched. By reading the “execution destination” item data DT2, the execution destination of the image processing is determined.

  Thereafter, the CPU 30 performs a process of executing image processing on the execution destination determined in step S380 (step S390). This image processing is of the type specified in step S340, and is based on the parameters calculated in step S370. That is, when the input image data Dpi is determined in step S380, the type of image processing specified in step S340 is performed on the input image data Dpi based on the parameters calculated in step S370, and the layer 1 Is determined, layer 1 is subjected to the type of image processing specified in step S340 based on the parameters calculated in step S370. If layer 2 is determined, layer 2 is processed. On the other hand, the type of image processing specified in step S340 is performed based on the parameters calculated in step S370.

  As a result of step S390, the types of image processing specified by clicking the icons IC1 to IC10 are “rotation / inversion”, “trimming”, “exposure correction”, “contrast adjustment”, “saturation adjustment”, “histogram correction”. ", The image processing is directly executed on the input image data Dpi.

  When the types of image processing specified by clicking the icons IC1 to IC10 are “unsharp mask” and “cross filter”, the image processing is executed on the layer 1. Since layer 1 is an adjustment layer as described above, in detail, processing for setting a color correction effect as an effect of “unsharp mask” or “cross filter” on layer 1 is performed. Specifically, the type (obtained in step S340) and parameters (obtained in step S370) for the image processing are stored in the layer 1 as modification information.

  When the types of image processing specified by clicking the icons IC1 to IC10 are “character insertion” and “clip art pasting”, the image processing is executed on the layer 2. Specifically, a process of writing a character or an image to be put on “Layer 2” or “Clip Art Pasting” to the layer 2 is performed.

  After execution of step S390, the CPU 30 advances the process to step S392, and the modified image data as the composite image data by superimposing layer 1 and layer 2 on the input image data Dpi captured in the input process of step S200. Processing for creating Dpo is performed. The order of superposition is the order from the bottom to the top. By this superposition, it is possible to obtain modified image data Dpo in which the effect of the image processing performed on layer 1 and layer 2 is performed on input image data Dpi.

  When the creation of the modified image data Dpo is completed in step S392, the CPU 30 advances the process to step S394 and displays the modified image data Dpo in the work field FDW of the application window WD. Thereafter, the CPU 30 determines whether or not the selection of the icons IC1 to IC10 provided in the application window WD has been completed (step S396). Specifically, the CPU 30 determines whether or not an operation command other than the icons IC1 to IC10 has been received, and when an affirmative determination is made, the selection of the icons IC1 to IC10 is completed, and the process is processed as “return”. Proceed. On the other hand, if it is determined in step S396 that selection of the icons IC1 to IC10 has not been completed, the process returns to step S340 to execute image processing corresponding to the newly selected icons IC1 to IC10. .

  The layer forming unit 52a (FIG. 2) is configured by the process of step S310 executed by the CPU 30. In addition, the image processing designation unit 52b (FIG. 2) is configured by the processing of steps S330 to S340 executed by the CPU 30.

  Further, the gradation bit number determination unit 52c, the first image processing execution unit 52d, and the second image processing execution unit 52e (FIG. 2 respectively) are configured by the processing of steps S350 to S390 executed by the CPU 30 and the classification table TBL1. The That is, in this embodiment, the gradation bit number determination unit 52c can be processed by referring to the classification table TBL1 in step S380, and the first image processing execution unit 52d and the processing in step S390 can be performed. Processing as the second image processing execution unit 52e is possible. In place of the configuration of the present embodiment using the classification table TBL1, a step for determining the type of image processing is provided in the routine of the retouching process (that is, on the program), and this is the case at the branch destination of that step. A configuration for performing image processing on the execution destination may be employed. Specifically, step A for determining whether the rotation is “rotation / inversion” to “histogram correction”, step B for determining whether it is “unsharp mask” or “cross filter”, and “character insertion” ”Or“ Clip Art Paste ”is provided. When the determination at Step A is affirmative, image processing is performed on the input image data Dpi. When the determination at Step B is affirmative, If the image processing is performed on 1 and an affirmative determination is made in step C, the image processing on layer 2 can be performed.

  The synthesis unit 52f (FIG. 2) is configured by the process of step S392 executed by the CPU 30.

C. Action / effect:
According to the computer system of this embodiment configured as described above, the operator clicks on the icons IC1 to IC10 one by one in the retouching process, so that the input image data Dpi input by the input process is displayed. On the other hand, image processing can be sequentially executed one by one. If the image processing specified by clicking is compatible with 16-bit color, it is directly executed for the input image data Dpi, and if it is compatible with 8-bit, it is executed for layers 1 and 2. . For this reason, the image processing corresponding to 16-bit color is collectively executed first, and then the image processing corresponding to 8-bit color is executed by layers 1 and 2.

  Accordingly, since image processing corresponding to 16-bit color is not executed using image data once reduced to 8-bit color, each image processing corresponding to 16-bit color has its original performance. It will be the one that demonstrates it. As a result, it is possible to prevent the image quality from being deteriorated in the retouching operation.

  Further, in this embodiment, even in the same 8-bit color image processing, layer 2 for image processing of a type related to a new image and layer 1 for image processing other than the type of decoration are used. The execution destination is distinguished. The type of image processing related to decoration will hide at least a part of the input image data located below, and if other image processing is performed thereafter, the effect may not be applied to the input image data Dpi. is there. According to this embodiment, since image processing other than the type related to decoration is first executed in the lower layer 1, the effect of these image processing is not impaired by the type of image processing related to decoration.

  As a modification of the first embodiment, it is also possible to set all layers to be the execution destination of the 8-bit color compatible image processing as a configuration in which only one layer is formed.

(II) Second embodiment:
Next, a second embodiment of the present invention will be described. The second embodiment is different from the first embodiment only in the number of layers to be formed and the configuration of the classification table TBL2, and the other configurations are the same.

  In the second embodiment, three layers are formed. FIG. 11 is an explanatory diagram conceptually showing three layers formed for the input image data Dpi, that is, layer 1, layer 2, and layer 3. As shown in the figure, layer 1, layer 2, and layer 3 have the same size as the input image data Dpi, and the order of layer 1, layer 2, and layer 3 from the bottom to the top with respect to the input image data Dpi. It is formed so as to overlap with each other. In this embodiment, layers 1 and 2 are adjustment layers, and layer 3 is a normal layer.

  FIG. 12 is an explanatory diagram illustrating an example of the classification table TBL2 of the second embodiment. Compared to the first embodiment, the execution destination of image processing corresponding to 16 bits is layer 1, the execution destination of image processing other than decoration corresponding to 8 bits is layer 2, and 8 bits. Correspondingly, the execution destination of the image processing related to decoration is layer 3 is different. Further, “rotation / inversion” and “trimming” are included in the lowermost layer in the classification table TBL1 of the first embodiment, but are included in the uppermost layer in the classification table TBL2 of the second embodiment. It is.

  The reason why the image processing of “rotation / inversion” and “trimming” is shifted to the uppermost layer is as follows. Image processing for “rotate / invert” and “trimming” is compatible with 16-bit color, but there is no problem because there is little information deterioration in the image even if the processing is shifted to 8-bit color. is there. In addition, both image processes are generally not compatible with the adjustment layer. The main purpose of the adjustment layer is to perform color correction and the like, and “rotation / inversion” and “trimming” are desired to be performed in a normal layer. In view of such a requirement, in this embodiment, the execution destination of the image processing of “rotation / inversion” and “trimming” is set to layer 3 which is a normal layer. As a modification of this embodiment, the adjustment layer may be configured to execute both “rotation / inversion” and “trimming” image processing, and the execution destination of both image processing may be changed to layer 1.

  In the second embodiment, since the number of layers to be formed is 3, in the modification process executed by the CPU 30, in step 310, layer 1, layer 2, and layer 3 are formed. In step 392, it is necessary to change the input image data Dpi so that layer 1, layer 2, and layer 3 are superimposed on each other to create modified image data Dpo as composite image data.

  In the second embodiment configured as described above, the types of image processing specified by clicking the icons IC1 to IC10 are "exposure correction", "contrast adjustment", "saturation adjustment", and "histogram correction". In the case of, the image processing is executed on the adjustment layer with respect to layer 1, which is the lowest layer. If the specified type of image processing is “unsharp mask” or “cross filter”, the image processing is executed for layer 2. When the specified type of image processing is “rotation / inversion”, “trimming”, “text insertion”, or “clip art pasting”, the image processing is executed on the layer 3.

  That is, in the second embodiment, 16-bit color image processing is performed on the lowest layer among the three layers, and 8-bit color image processing is performed on the three layers. It is executed for layers 2 and 3 which are layers other than the lowest layer. For this reason, the image processing corresponding to 16-bit color is executed together first, and then the image processing corresponding to 8-bit color is executed. Accordingly, since image processing corresponding to 16-bit color is not executed using image data once reduced to 8-bit color, each image processing corresponding to 16-bit color has its original performance. It will be the one that demonstrates it. As a result, it is possible to prevent the image quality from being deteriorated in the retouching operation.

  Further, in this embodiment, even in the same 8-bit color image processing, layer 3 for image processing of a type related to a new image and layer 2 for image processing other than the type of decoration are used. The execution destination is distinguished. The type of image processing related to decoration will hide at least a part of the input image data located below, and if other image processing is performed thereafter, the effect may not be applied to the input image data Dpi. is there. According to this embodiment, since image processing other than the type related to decoration is first executed in the second layer, which is the lower layer, the effect of these image processing is not impaired by the type of image processing related to decoration. .

  As a modification of the second embodiment, it is also possible to use all layers as the execution destination of the 8-bit color compatible image processing as a configuration in which two layers are formed.

(III) Other embodiments:
The present invention is not limited to the above-described embodiments and modifications, and can be carried out in various modes without departing from the gist of the present invention. For example, the following modifications are possible. is there.

(1) In the above embodiment, the correction processing includes “rotation / inversion”, “trimming”, “exposure correction”, “contrast adjustment”, “saturation adjustment”, “histogram correction”, “unsharp mask”, “ “Cross filter” and “character insertion” are included, but instead, other types of image processing can be added, or some of the image processing can be removed. Other types of image processing include, for example, “color tone / white balance adjustment”, “tone curve adjustment”, “peripheral light amount attenuation correction”, “mosaic / emboss processing”, “lighting effect”, and the like. “Tint / white balance adjustment”, “tone curve adjustment”, “peripheral light intensity dimming correction” are 16-bit color compatible, “mosaic / embossing”, “lighting effect” are 8-bit color compatible, and This is image processing other than the type related to decoration. Of course, other image processing (for example, photo compositing) that is compatible with 8-bit color and that is related to decoration can be added.

(2) In the first and second embodiments, the image processing is compatible with 8-bit color and 16-bit color. For example, 8-bit color support, 16-bit color support, 24 It is also possible to support color with 3 or more bits, such as bit color support. As a specific embodiment in this case, three layers are formed in the order from bottom to top in the order of layer 1, layer 2, and layer 3, and image processing corresponding to 24-bit color is performed using input image data. On the other hand, image processing for 16-bit color is performed for layer 1 and image processing for 8-bit color is performed for layer 3 or layer 2 depending on whether or not there is a decoration relationship. Can do.

  According to this configuration, image processing is executed in the order corresponding to 24-bit color, 16-bit color, and 8-bit color. Therefore, using the image data that has once fallen to 8-bit color, Since image processing corresponding to 24-bit color is not executed, or image processing corresponding to 24-bit color is not executed using image data once reduced to 16-bit color, Each image process corresponding to 24-bit color exhibits its original performance. As a result, it is possible to prevent the image quality from being deteriorated in the retouching operation.

(3) It should be noted that, as a modification of the above embodiment (2), the execution destination of the 8-bit color compatible image processing can be all set to layer 2. In this case, two layers are sufficient.

(4) Also, four layers are formed in the order from bottom to top in the order of layer 1, layer 2, layer 3, and layer 4, and 24-bit color compatible image processing is performed on layer 1 Image processing corresponding to 16-bit color can be executed for layer 2 and image processing corresponding to 8-bit color can be executed for layer 4 or layer 3 depending on whether or not there is a decorative relationship. According to this configuration, image processing is executed in the order corresponding to 24-bit color, 16-bit color, and 8-bit color. Therefore, as in the modification of the embodiment (2), 16-bit Each image processing corresponding to color and 24-bit color exhibits the original performance. As a result, it is possible to prevent the image quality from being lowered in the retouching operation.

(5) As a modification of the above embodiment (4), the execution destination of 8-bit color compatible image processing can be all set to layer 3. In this case, three layers are sufficient.

(6) In the first and second embodiments, the input image data Dpi was taken with a digital camera, but instead of this, a silver salt photograph or color gravure obtained using a color scanner or the like. Such image data may be used. Alternatively, it may be prepared in advance in a storage device such as the HDD 42. Or what was taken in from the outside via a network may be used. Further, it is not always necessary to use color image data, and can be applied to monochrome image data.

(7) Although the input image data Dpi is 16-bit color image data stored in the “RAW mode” storage format, it can be replaced with 8-bit color image data. Among 16-bit color image processing, there is an image processing that outputs a finer value using 16-bit processing even if the input image has only 8-bit information. In this case, this fine value is lost when image processing corresponding to 8-bit color is executed in post-processing. In order to make use of fine values generated by 16-bit color image processing, even if the input image data is 8-bit color data, it is necessary to perform image processing corresponding to 16-bit color first, and the present invention is applied. Is possible.

1 is a block diagram showing a schematic hardware configuration of a computer system 10 to which a first embodiment of the present invention is applied. It is a block diagram which shows the mode of the control processing according to this photo retouch software 50 performed by the computer main body 16. FIG. It is a flowchart which shows the routine of the said control process. It is explanatory drawing which shows the initial state of the application window WD. It is a flowchart which shows the routine of a correction process. It is explanatory drawing which shows notionally two layers formed with respect to the input image data Dpi. It is explanatory drawing which shows the application window WD for a correction process. It is explanatory drawing which shows an example of dialog box DBX1 for "rotation / inversion." It is explanatory drawing which shows an example of dialog box DBX2 for "contrast." It is explanatory drawing which shows an example of classification table TBL1. It is explanatory drawing which shows notionally three layers formed with respect to input image data Dpi in 2nd Example. It is explanatory drawing which shows an example of the classification table TBL2 of 2nd Example.

Explanation of symbols

10 ... Computer system 12 ... CRT display 13 ... Printer 14 ... Digital camera 16 ... Computer body 18 ... Keyboard 20 ... Mouse 30 ... CPU
31 ... ROM
32 ... RAM
33 ... Display image memory 34 ... Mouse interface 35 ... Keyboard interface 36 ... CDC
37 ... HDC
38 ... CRTC
39 ... Printer interface 40 ... I / O interface 41 ... I / O port 44 ... Modem 46 ... Public telephone line 47 ... Server 50 ... Photo retouch software 51 .. Input module 52 ... Modification module 52a ... Layer formation unit 52b ... Image processing designation unit 52c ... Gradation bit number determination unit 52d ... First image processing execution unit 52e ... Second Image processing execution unit 52f ... Composition unit 53 ... Print module 54 ... Output module 60 ... Display driver 62 ... Printer driver BR1 ... Menu bar BR2 ... Tool bar BT1 to BT4 .. . Button Dpi ... input image data Dpo ... modified image data FDW ... work field IC1-IC10 ... icon MN ... processing menu column TBL1 ... classification table WD ... application window DBX , DBX2 ... dialog box SB ... slider bar TBL1, TBL2 ... classification table

Claims (4)

In the image processing apparatus that modifies the input image data by sequentially executing two or more image processes selected from a plurality of image processes prepared in advance for the input image data,
Each of the plurality of image processes is a first number or a second number smaller than the first number, depending on the type of image processing, in which the number of gradation bits representing pixels of image data that can be handled It is configured to be able to take
Layer forming means for forming a layer for reflecting image processing on the input image data;
Image processing designating means for receiving an operation command from an operator and designating predetermined image processing selected from the plurality of image processing for the input image data;
The number of gradation bits for determining whether the predetermined number of image data specified by the image processing specifying means handles the first number or the second number of image data as the number of bits of the gradation A determination means;
When it is determined by the gradation bit number determination means that the predetermined image processing is to handle the image data having the first number, the predetermined image processing is executed on the input image data. First image processing execution means;
A second for causing the layer to execute the predetermined image processing when it is determined by the gradation bit number determining means that the predetermined image processing is to handle the image data having the second number; Image processing execution means;
Combining means for superimposing the layer on the input image data to create composite image data ,
The layer forming means is configured to form the first layer and the second layer in the order from bottom to top in superposition,
The second image processing execution means includes
Processing determination means for determining whether or not the predetermined image processing is of a type relating to a decoration on which a new image is placed;
It is determined by the gradation bit number determining means that the predetermined image processing is to handle image data that is the second number, and the predetermined image processing is a type related to the decoration by the processing determining means. Means for executing the predetermined image processing on the first layer when it is determined that the first layer is not,
It is determined by the gradation bit number determining means that the predetermined image processing is to handle image data that is the second number, and the predetermined image processing is a type related to the decoration by the processing determining means. Means for causing the second layer to execute the predetermined image processing when it is determined that
The image processing apparatus according to claim Rukoto equipped with. In the image processing method for correcting the input image data by sequentially executing two or more image processes selected from a plurality of image processes prepared in advance for the input image data,
Each of the plurality of image processes is a first number or a second number smaller than the first number, depending on the type of image processing, in which the number of gradation bits representing pixels of image data that can be handled It is configured to be able to take
(A) a step of forming a layer for reflecting image processing on the input image data;
(B) receiving a command from an operator and designating a predetermined image process selected from the plurality of image processes for the input image data;
(C) a process in which the predetermined image processing specified in the process (b) determines which of the first number and the second number of image data the number of bits of the gradation is handled. When,
(D) When the predetermined image processing is determined to handle the first number of image data in the step (c), the predetermined image processing is executed on the input image data. The process of making
(E) a step of causing the layer to execute the predetermined image processing when the predetermined image processing is determined to handle the second number of image data in the step (c). When,
(F) a step of superimposing the layer on the input image data to create composite image data ;
The step (a) is a configuration in which the first layer and the second layer are formed in the order from bottom to top in superposition,
The step (e)
(E-1) a step of determining whether or not the predetermined image processing is of a type relating to a decoration on which a new image is placed;
(E-2) The predetermined image processing is determined to handle the second number of image data in the step (c), and the predetermined image is determined in the step (e-1). When it is determined that the processing is not of a type related to the decoration, a step of executing the predetermined image processing on the first layer;
(E-3) The predetermined image processing is determined to handle the second number of image data in the step (c), and the predetermined image is determined in the step (e-1). When it is determined that the processing is of a type related to the decoration, a step of executing the predetermined image processing on the second layer;
Image processing method according to claim Rukoto equipped with. A computer program for modifying the input image data by sequentially executing two or more image processes selected from a plurality of image processes prepared in advance for the input image data,
Each of the plurality of image processes is a first number or a second number smaller than the first number, depending on the type of image processing, in which the number of gradation bits representing pixels of image data that can be handled It is configured to be able to take
(A) a function of forming a layer for reflecting image processing on the input image data;
(B) a function of receiving an operation command from an operator and designating a predetermined image process selected from the plurality of image processes for the input image data;
(C) The function of determining whether the predetermined number of image data specified by the function (b) is to handle the first number or the second number of image data as the number of bits of the gradation. When,
(D) When it is determined by the function (c) that the predetermined image processing is to handle the first number of image data, the predetermined image processing is executed on the input image data. Function
(E) A function of causing the layer to execute the predetermined image processing when it is determined by the function (c) that the predetermined image processing handles the second number of image data. When,
(F) causing a computer to realize a function of superimposing the layer on the input image data to create composite image data ;
The function (a) is a configuration that forms the first layer and the second layer in the order from bottom to top in the superposition,
The function (e) is
(E-1) a function for determining whether or not the predetermined image processing is of a type relating to decoration on which a new image is placed;
(E-2) It is determined that the predetermined image processing handles the second number of image data by the function (c), and the predetermined image is processed by the function (e-1). A function for causing the first layer to execute the predetermined image processing when it is determined that the processing is not of a type related to the decoration;
(E-3) It is determined by the function (c) that the predetermined image processing handles the second number of image data, and the predetermined image is processed by the function (e-1). A function for causing the second layer to execute the predetermined image processing when it is determined that the processing is of a type related to the decoration;
Image processing method according to claim Rukoto is realized on the computer.
Computer program for. The computer-readable recording medium which recorded the computer program of Claim 3 .

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