JP6548500B2 - File name conversion apparatus, method, program, and recording system - Google Patents

Description

  The present invention relates to a file name conversion apparatus, method, program, and recording system.

  In recent years, high-resolution televisions capable of displaying high-resolution moving images (so-called 4K moving images) having a resolution four times that of full high-definition television have begun to spread and broadcasting of 4K moving images has also started. Furthermore, a system of ultra-high resolution moving images (so-called 8K moving images) having a resolution 16 times that of full high vision is being developed aiming for introduction in 2020. With this system, it is possible to realize immersive moving images as if they were on the spot.

  To capture an 8K moving image with a video camera, a high-spec system capable of processing a large amount of moving image data in real time is required. However, such systems are very expensive. Therefore, a system is employed in which a video camera outputs image data (undeveloped image data) from an imaging sensor as RAW data to a recording apparatus without performing real-time development processing requiring a huge processing load. This makes it possible to capture and record 8K moving images without making the system complicated while reducing the load on the video camera. In the video production industry, moving images are completed by performing development processing of recorded RAW data in a later step.

  However, in the broadcast industry, it is desirable to record RAW data developed in real time, since it can not spend time and cost to complete moving images. In such an application, a system configuration is used in which a real-time development processing device is prepared separately from the video camera, and RAW data output from the video camera is developed and recorded by the real-time development processing device.

  In both the video production industry and the broadcast industry, the motion picture transmission standard SDI of the SMPTE (Society of Motion Picture and Television Engineers) is used. In SDI (Serial Digital Interface), 3G-SDI capable of transmitting up to 3 Gbps with one cable has been put into practical use, and in recent years, standardization of 6G-SDI capable of higher rate transmission has been performed.

  However, in order to transmit large capacity moving image data such as 8K moving image with one SDI cable, the transfer rate is insufficient. On the other hand, there has been proposed a method of securing a necessary data transfer rate by dividing moving image data into a plurality of pieces of data and performing parallel transmission using a plurality of cables (see Patent Document 1).

JP, 2014-3492, A

  For example, it is conceivable to use a video camera which divides an 8K moving image into four 4K moving images and outputs them in parallel with four SDI cables. Although an 8K moving image can be recorded by preparing a recording device having four SDIs, such a recording device is very expensive. On the other hand, 8K moving images can be substantially recorded by preparing four recording devices corresponding to 4K moving images. Since recording devices compatible with 4K moving images are already in widespread use, necessary systems can be constructed inexpensively. When a recording device compatible with 4K moving images records RAW data of 4K moving images, an 8K moving image can be restored by performing development processing with a separately prepared editing device and combining four 4K images on the screen. .

  In a recording system in which an original moving image is divided into a plurality of moving images (divided moving images) and each divided moving image is recorded by an individual recording device, the file level of the divided moving image recorded in each recording device is a posteriori Need to be identifiable. Otherwise, management and editing after recording would be very troublesome. For example, the file name of each file to be divided and recorded or a part thereof may be determined in advance, or may be named under a certain rule.

  Even when the file name is set in advance, if the cable is inserted incorrectly when moving and reassembling the set during imaging, the correspondence between the divided moving image and the file name is lost. Therefore, the user must check the connection of the cable and the setting of the recording device each time imaging is performed, which takes time for the work.

  An object of the present invention is to present a file name conversion device, method, program, and recording system capable of solving such problems and ensuring consistency of file names of divided moving images.

  In order to achieve the above object, a file name conversion device according to the present invention is a moving image file generated by dividing a moving image in space and / or time, and any of the space and time. Means for reading a moving image file holding, as metadata, division information indicating division positions in one or both, means for detecting the division information from metadata of the moving image file, and the moving image according to the division information And changing means for changing the file name of the file.

  According to the present invention, the file name is changed according to the division information included in the metadata, so editing and management of a plurality of moving image files obtained by dividing the original moving image can be facilitated.

FIG. 1 is a block diagram for explaining an example of a schematic configuration of an imaging device 100 according to a first embodiment. It is a figure for demonstrating an example of the Bayer structure array of an image pick-up element. It is a block diagram for demonstrating an example of schematic structure of the signal processing part of the imaging device 100 shown in FIG. It is a schematic diagram which shows the effective pixel area of the image pick-up element of the imaging device 100 shown in FIG. It is a schematic diagram which shows the pixel data arrangement | positioning of each color which comprises a RAW flame | frame. It is a block diagram for demonstrating an example of schematic structure of the multiplexing part of the signal processing part shown in FIG. It is a figure which shows the example of allocation of the pixel data multiplexed to an effective imaging | video period. It is an example of a structure of the data stream of 4 channels produced | generated from the pixel data of 1 line. It is a schematic diagram which shows the structural example of an ANC packet. It is a schematic diagram which shows the data structural example of the data stream which multiplexed the ANC packet. It is a figure which shows the structure which records the 16-channel output image of the imaging device 100 shown in FIG. 1 by eight recording devices. It is a block diagram for demonstrating an example of schematic structure of the recording devices 1110-1 to 1110-8 shown in FIG. 14 is a flowchart showing an example of the operation of the recording apparatuses 1110-1 to 1110-8 shown in FIG. It is a block diagram for demonstrating an example of a schematic structure of a personal computer (PC) which changes the file name of the moving image file recorded on the recording devices 1110-1 to 1110-8 shown in FIG. It is a flowchart which shows an example of the file name change process by PC shown in FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the present invention is not limited to the embodiments described below.

  FIG. 1 is a block diagram for explaining an example of a schematic configuration of an imaging apparatus 100 used for the recording system in the first embodiment.

  When the user operates the operation unit 116 to input a power on instruction, the power supply unit supplies power to each component of the imaging apparatus 100.

  The imaging unit 101 includes an imaging lens 102, a shutter 103, an imaging device 104, a pre-processing circuit 105, an A / D converter 106, a post-processing circuit 107, and a ROM 108.

  The imaging lens 102 includes a zoom lens and a focus lens. The shutter 103 doubles as an aperture function. The imaging device 104 is a CCD imaging sensor or a CMOS imaging sensor having a Bayer structure as shown in FIG. 2 and converts an optical image into an electrical signal. The imaging element 104 progressively supplies the electric signal of the accumulated charge amount to the pre-processing circuit 105 at the timing of the clock supplied from the control unit 113 (1/120 seconds in the first embodiment). The pre-processing circuit 105 includes a CDS (correlated double sampling) circuit that removes noise included in the output of the imaging device 104 and an AGC (automatic gain control) circuit. The pre-processing circuit 105 removes noise from the image signal from the image sensor 104 and adjusts the level. The A / D converter 106 converts an analog image signal output from the pre-processing circuit 105 into a digital image signal.

  The post-processing processing circuit 107 converts the digital image signal from the A / D converter 106 into pixel planes for each color, that is, four pixels of R (red), Gr (green), Gb (green) and B (blue). Split into planes. The post-position processing circuit 107 further applies linear matrix processing of color reproduction to each color component, and then supplies pixel data of 10 bits of each color to the signal processing unit 109.

  The ROM 108 stores, as information related to the image sensor 104, the total number of pixels, the size in the vertical and horizontal directions, the position of the effective pixel, and the like.

  The signal processing unit 109 supplies a read clock to the imaging unit 101 (post-processing circuit 107), reads pixel data of each color (R, Gr, Gb, B), and generates a data stream for SDI transmission, The signal is supplied to the multiplexer 110. The multiplexer 110 multiplexes the data stream from the signal processing unit 109 and outputs the multiplexed data stream to the serializer 111. The serializer 111 converts the multiplexed digital stream from the multiplexer 110 into serial data. The serial data generated by the serializer 111 is output to the outside through the external interface 112 configured by the BNC terminal.

  The control unit 113 can control all the components of the imaging apparatus 100. For example, the control unit 113 detects an operation of the user by the operation unit 116, and controls the imaging unit 101, the signal processing unit 109, and the multiplexer 110 while synchronizing timing. The control unit 113 temporarily writes the data created by the various processes in the RAM 115, and reads it for reference as needed.

  The flash memory 114 is an electrically erasable and recordable storage unit, and a program necessary for operating the control unit 113 and adjustment data unique to the imaging apparatus 100 are written in advance.

  Each component of the imaging device 100 is connected to an internal bus 117 serving as a transmission path for control signals and data signals between the components.

  FIG. 3 is a block diagram for explaining an example of a schematic configuration of the signal processing unit 109. As shown in FIG. The RAM 303 is a memory for temporarily storing pixel data of each color read from the post-processing circuit 107 of the imaging unit 101. The read clock supply unit 302 supplies the post-processing circuit 107 with a read clock of the data of each color pixel. The signal processing unit 109 divides the pixel data of each color read from the post-processing circuit 107 into pixel data of an effective pixel and pixel data of peripheral pixels under the control of the control unit 113 and writes the divided data into the RAM 303. The pixel data reading unit 301 divides the pixel data of one screen stored in the RAM 303 into four and reads the data, and supplies the data to 16 signal multiplexing units 304-1 to 304-16. Since the pixel data having four colors is divided into four in one screen, it is divided into 16 groups of pixel data, and the signal processing unit 109 comprises 16 parallel signal multiplexing units 304-1 to 304-16. Have.

  The signal multiplexing units 304-1 to 304-16 have the same configuration, and respectively generate moving image data streams from input pixel data. For example, each signal multiplexing unit 304-1 to 304-16 rearranges input pixel data, multiplexes video timing reference codes SAV (Start of Active Video) and EAV (End of Active Video), and various ancillary data. Multiplex.

  The operation of the signal multiplexing units 304-1 to 304-16 will be described by taking an 8K moving image as an example. It is assumed that the image captured by the imaging unit 101 has a pixel size of 8192 horizontal pixels (horizontal) and 4320 vertical pixels (vertical) as shown in FIG. 4. The color filters are assumed to be in the Bayer arrangement as shown in FIG. A pixel data group capable of acquiring data at one time from the entire area is defined as a RAW frame. In the following, data of 8192 pixels in width and 4320 pixels in height are described as 8K image data, and data of 4096 pixels in width and 2160 pixels in height are described as 4K image data.

  The imaging unit 101 can output 120 RAW frames per second. In the following, when transmitting pixel data of n frames per second, it is expressed as nP. For example, when transmitting pixel data of 120 frames per second, it is described as 120P.

  The control unit 113 reads, from the ROM 108 of the imaging unit 101, information on the vertical width and the horizontal width of the pixels of the imaging sensor and the arrangement of pixels of the Bayer structure, and controls writing to the RAM 303 and timing thereof according to this information. Among the pixel data supplied from the post-processing circuit 107, the pixel data of the effective pixel is written to the RAM 303 by this control. FIG. 5 shows pixel data of effective pixels to be written to the RAM 303, and pixel data of each color (R, Gr, Gb, B) constituting a RAW frame. The pixel data of each color is 4096 pixels horizontally and 2160 pixels vertically.

  The control unit 113 divides the pixel data of the effective pixel written in the RAM 303 into 16 and reads the divided pixel data, and supplies each of the divided pixel data to the signal multiplexing units 304-1 to 304-16. The sixteen divisions consist of four divisions in the screen and four divisions in the time axis direction. An example of this operation will be described. Here, the pixel data of one frame written in the RAM 303 is shown in horizontal and vertical respectively as indicated by (0, 0), (1, 0), (0, 1) and (1, 1) in FIG. Divide into two. (0, 0), (1, 0), (0, 1) and (1, 1) respectively indicate position coordinates of a 4K image obtained by dividing an 8K image into four. That is, one 8K image data is spatially divided into four 4K image data on the screen. The control unit 113 distributes pixel data of coordinates (0, 0) to the signal multiplexing units 304-1 to 304-4 and pixel data of coordinates (1, 0) to the signal multiplexing units 304-5 to 304-8. Do. Similarly, the control unit 113 sets pixel data of coordinates (0, 1) to the signal multiplexing units 304-9 to 304-12 and sets pixel data of coordinates (1, 1) to the signal multiplexing units 304-13 to 304-16. Distribute to each

  In the first embodiment, moving image data obtained by such spatial four division is further divided on the time axis. For example, moving image data of 120 frames / second is divided into four 30 frames / second moving image data.

  The RAM 303 stores moving image data of 120 frames per second. The control unit 113 divides the moving image data of 30 frames / second into four signal multiplexing units 304-1 to 304-4, 304-5 to 404-8, and divides the moving image data of 30 frames / second into four. 304-9-304-12, 304-13-304-16. For example, the first frame stored in the RAM 303 is the signal multiplexer 304-1, the second frame is the signal multiplexer 304-2, and the third frame is the signal multiplexer 304-3. The first frame is distributed to the signal multiplexing unit 304-4. Then, the fifth frame is sent to the signal multiplexing unit 304-1, the data for the sixth frame is sent to the signal multiplexing unit 305, the data for the seventh frame is sent to the signal multiplexing unit 306, and the data for the eighth frame is sent The signal multiplexer 307 divides the signal and outputs it.

  As described above, the control unit 113 divides the 120P · 8K moving image data stored in the RAM 303 into 30P · 4K moving image data into 16 and distributes each 4K moving image data to the signal multiplexing units 304-1 to 304-16. Do.

  The operation of the signal multiplexing units 304-1 to 304-16 will be described. The signal multiplexing unit 304 has four multiplexing units 320, 321, 322 and 323 arranged in parallel. The multiplexing units 320, 321, 322 and 323 have the same configuration, and FIG. 6 is a block diagram for explaining an example of a schematic configuration of the multiplexing units 320 to 323.

  The multiplexing units 320 to 323 are, in principle, FIFO (First-In First-Out) memories, and store pixel data from the RAM 303 at the timing of the write clock supplied from the control unit 113. At this time, the control unit 113 distributes pixel data of each color to the multiplexing units 320 to 323 according to the pixel data multiplexing structure applied in the SDI transmission. For example, according to SMPTE ST 425 (3G-SDI) level B as a transmission method of SDI, the multiplexing structure of SMPTE ST 372 (Dual Link) R'G'B '+ A 10 bits is applied, and each pixel is applied. Allocate data. Also, the sample format of the pixel conforms to 2048 × 1080/30 P specified by SMPTE ST 2048-2.

  FIG. 7 shows the distribution of pixel data multiplexed in the effective video period according to the SMPTE standard. The control unit 113 sequentially supplies the pixel data read from the RAM 303 to the multiplexing units 320, 321, 322, and 323 that generate data streams. For example, the multiplexing unit 320 receives the pixel data Gb in the order of Gb (1), Gb (2), ..., Gb (2048), and generates the data stream 1 of Link A.

  The line calculation unit 601 calculates SAV, EAV, LN (Line Number) and cyclic redundancy code CRCC for recognizing the division position of the image signal with respect to the receiving apparatus that receives the signal of SDI. The SAV / EAV timing pulse generation unit 602 receives a read clock for controlling the timing of reading pixel data from the control unit 113 and timing information of a period of an effective video period and a vertical / horizontal blanking region. The timing information of the effective video period indicates a period in which the effective pixel data is multiplexed to the signal of the data stream. The timing information of the blanking area period indicates a period for multiplexing ancillary data. The SAV / EAV timing pulse generator 602 also generates timing pulses for multiplexing pixel data.

  The switching control unit 603 selects one of the input data from the RAM 303 and the output data of the line calculation unit 601. The selected data is written to the RAM 604. The switching control unit 603 switches the timing of reading pixel data from the RAM 303 based on the timing pulse supplied from the SAV / EAV timing pulse generation unit 602. The switching control unit 603 switches pixel data and SAV, EAV, LN, and CRCC to the data stream being generated while switching the reading timing of the RAM 303 while multiplexing.

  By such an operation, the generated data stream is written to the RAM 604 in each of the multiplexing units 320 to 323, and is output to the ancillary multiplexing unit 324.

  FIG. 8 shows the result of allocating pixel data of one line in each pixel plane of the pixel configuration shown in FIG. 4 to four data streams. The numbers in parentheses for each color indicate the order from the pixel at the left end of the pixel plane of that color. For example, the number “3” in the parentheses of Gb (3) indicates that it is the third from the pixel data at the left end of the Gb pixel plane. Here, pixel data of R, Gr, Gb, and B arranged in two lines constituting a RAW frame are distributed to four data streams.

  The ancillary multiplexing unit 324 adds additional information such as time code, payload ID, imaging date, user-defined name, reel number, scene number, take number, shot number, and division information to the data stream from the multiplexing units 320 to 323. Multiplex. The multiplexing method conforms to SMPTE 291. The ancillary multiplexing unit 324 outputs the multiplexed result to the multiplexer 110.

  The time code is information attached to each frame of the video signal and is expressed in units of "hour, minute, second and frame". The payload ID indicates information on a recording / transmission moving image format such as frame rate, resolution, bit depth and signal configuration. The reel number, the scene number and the take number are different numbers for each recording medium, and are set by the user for each scene and take. The shot number is a number incremented by recording start or recording stop of the moving image.

  The division information includes information on the division positions of the above-described spatial division and temporal division. Here, the division information includes information on the number of divisions in the horizontal direction, the number of divisions in the vertical direction, and the position coordinates regarding spatial division positions, and includes information on the number of frame divisions and frame information regarding temporal division positions. In the case of dividing 120P · 8K moving image data into sixteen 30P · 4K moving image data, the following occurs. That is, the number of horizontal divisions in space division is 2, the number of vertical divisions is 2, and the number of frame divisions in time division is 4. In each signal multiplexing unit 304, the processing target of the multiplexing unit 320 is (0, 0) in position coordinates, and the frame number is 1. Further, frame numbers of the process targets of the multiplexing units 321, 322, and 323 are 2, 3, and 4, respectively.

  The ancillary multiplexing unit 324 stores division information in User Data Words composed of 10 bits of each Type 2 ancillary packet (ANC packet) shown in FIG. The format of the stored data may be any format as long as each information can be obtained as a value. In the header areas DID and SDID for identifying the type of ANC packet, predetermined values are set for information to be multiplexed. Note that, as a method of multiplexing by the ancillary multiplexing unit 324, a method may be adopted in which specific information is multiplexed at a specific position in the blanking area without adopting a packet structure using DID and SDID. For example, the ancillary multiplexing unit 324 multiplexes additional information such as the above-described time code in the horizontal blanking area specified by the line number 6 of the data stream 1 of Link A.

  FIG. 10 shows an example of the data configuration of a data stream in which ANC packets are multiplexed. The multiplexer 110 alternates word by word so that four data streams in which various ANC packets are multiplexed by the ancillary multiplexing unit 324 become a single data stream for each output of the signal multiplexing units 304-1 to 304-16. Multiplexed to The multiplexing scheme conforms to SMPTE ST 425. The multiplexer 110 outputs the multiplexed data to the serializer 111. The serializer 111 converts each data from the multiplexer 110 into serial data, and outputs the serial data from the external interface 112 to the outside through 16 BNC terminals.

  FIG. 11 shows a connection configuration example of the imaging device 100 and eight recording devices 1110-1 to 1110-8 that record output image data of the imaging device 100. The eight recording apparatuses 1110-1 to 1110-8 have two BNC terminals capable of inputting 30P · 4K moving image data. The 16 BNC outputs of the imaging device 100 are connected to the corresponding recording devices 1110-1 to 1110-8 via coaxial cables 1112-1 to 1112-8 and coaxial cables 1114-1 to 1114-8. The imaging device 100 outputs 30P / 4K moving image data in a predetermined moving image format per coaxial cable. The recording devices 1110-1 to 1110-8 multiplex two channels of 30P · 4L moving image data input from the coaxial cables 1112-1 to 1112-8 and 1114-1 to 1114-8 to generate 60P · 4K moving image data. Is generated and recorded on a recording medium. When using a recording apparatus for recording 30P / 4K moving image data of one channel, 16 units of the recording apparatus are prepared.

  FIG. 12 is a block diagram for explaining an example of a schematic configuration of the recording apparatus 1110-n (n = 1 to 8. The same applies in the following.).

  When the user operates the operation unit 1208 to input a power-on instruction, the power supply unit of the printing apparatus 1110-n supplies power to each component of the printing apparatus 1110-n. As a result, the recording device 1110-n is activated.

  The control unit 1206 can control all the components of the recording device 1110-n. For example, the control unit 1206 controls the deserializer 1202, the demultiplexer 1203, the recording medium 1204, and the signal analysis unit 1207 under predetermined timing synchronization in accordance with the operation and operation state of the operation unit 1208. The control unit 1206 temporarily writes the data created in the various processes in the RAM 1209 and reads it as necessary.

  The flash memory 1210 is an electrically erasable and recordable storage medium. Programs necessary for operating the control unit 1206 and adjustment data unique to the recording device 1110-n are written in the flash memory 1210 in advance.

  The external interface 1201 has two BNC terminals, and output signals of two channels of the imaging device 100 are input to the external interface 1201 through two coaxial cables.

  Each component of the recording device 1110-n is connected to an internal bus 1212 which is a transmission path for control signals and data signals between the components.

  The deserializer 1202 converts serial signals of two channels input from the external interface 1201 into parallel data, respectively, and inputs the parallel data to the demultiplexer 1203. The demultiplexer 1203 performs separation operation reverse to that described with reference to FIGS. 8 to 10 on parallel data of two channels supplied from the deserializer 1202, and restores a data stream that is the source of SDI transmission. .

  The recording / reproducing unit 1211 records the image data and the ANC packet data and the like generated by the demultiplexer 1203 as one frame and one file on the recording medium 1204 of the file system such as UDF, FAT or NTFS. The recording medium 1204 includes, for example, any recording medium such as a magnetic disk, an optical disk, or a semiconductor memory, as long as the medium can record image data, ANC packet data, and the like. The start and stop of recording are performed by the user operating the operation unit 1208 or performed based on the signal analysis result of the signal analysis unit 1207. The recording / reproducing unit 1211 also reads out the image data, the ANC packet data, etc. recorded on the recording medium 1204 according to the operation of the operation unit 1208 by the user.

  The signal analysis unit 1207 extracts and analyzes ANC packet data included in the data stream generated by the demultiplexer 1203 based on the values of DID and SDID, which are headers for identifying the type of ANC packet. The signal analysis unit 1207 sends, to the control unit 1206, additional information such as information such as the obtained time code, payload ID, imaging date, reel number, scene number, take number, shot number, and division information.

  The control unit 1206 records various information received from the signal analysis unit 1207 on the recording medium 1204 as metadata attached to the output data stream of the demultiplexer 1203.

  Further, the control unit 1206 sets a file name based on various information received from the signal analysis unit 1207 as a file name of a moving image file recorded on the recording medium 1204. Details of the file name setting method will be described later.

  The data file recorded on the recording medium 1204 can be transferred to the outside via the external interface 1205. In other words, an external information device can access the recording medium 1204 via the external interface 1205 and read a desired data file. The external interface 1205 may be any one as long as the external device can read / write the data recorded in the recording medium 1204, and includes any interface capable of connecting a peripheral device to the recording device 1110-n, such as a USB terminal.

  The operation of the control unit 1206 for setting the file name of the moving image file recorded on the recording medium 1204 will be described with reference to the flowchart shown in FIG.

  In S1301, the control unit 1206 receives, from the signal analysis unit 1207, various types of information obtained by analysis of ancillary packet data in the signal analysis unit 1207.

  In step S1302, the control unit 1206 determines whether file name related information exists. Here, the file name related information indicates a user-defined name, a reel number, a scene number, a take number and a shot number among various information obtained by analysis of ancillary packet data by the signal analysis unit 1207. The file name related information is, so to speak, moving image specifying information specifying the original moving image in the imaging apparatus 100 and the characteristics such as the number of pixels and the frame rate. If the file name related information exists, the control unit 1206 proceeds to S1303, and if none of the file name related information exists, the control unit 1206 proceeds to S1304.

  In step S1303, the control unit 1206 sets the file name (body part excluding the extension) of the file to be recorded to the character string including the file related information described above, and the process advances to step S1305. For example, when all the file name related information exists, the control unit 1206 generates a character string “USER0_R001_S002_T003_004” and sets it as a file name. Here, “USER0” indicates a user-defined name, “R001” indicates a reel number, “S002” indicates a scene number, “T003” indicates a take number, and “004” indicates a shot number. As a result of the ancillary packet analysis in S1301, when there is a file name related information that is not multiplexed, the control unit 1206 prepares a file name by stuffing the name portion based on the absent information. For example, when the take number does not exist, in the above example, the file name is “USER0_R001_S002_004”.

  In step S1304, the control unit 1206 adopts a file name preset in the recording device 1110-n, and proceeds to step S1305. The file name to be set is, for example, a user-defined name set by the user, a reel number, a scene number, a take number, a shot number incremented each time recording starts, etc. It consists of

  In step S1305, the control unit 1206 determines whether imaging date information is included in various types of information obtained by analysis of ancillary packet data by the signal analysis unit 1207. If the imaging date information is included (S1305), the control unit 1206 proceeds to S1306, and if not included (S1305), the control unit 1206 proceeds to S1307. In step S1306, the control unit 1206 adds imaging date information to the file name, and the process advances to step S1308. In S1307, the date information held by the recording device 1110-n is added to the file name as recording date information, and the process proceeds to S1308. The file name is, for example, the file name "USER0_R001_S002_T003_004_150917". The added "15" indicates the last two digits of the year, "09" indicates the month, and "17" indicates the date.

  In step S1308, the control unit 1206 determines whether time code is included in various information obtained by analysis of ancillary packet data of the signal analysis unit 1207. If the time code is included (S1308), the control unit 1206 proceeds to S1309, and if not included (S1308), the control unit 1206 proceeds to S1310. In S1309, the control unit 1206 adds a time code to the file name, and proceeds to S1311. In S1310, the control unit 1206 adds the time code held by the recording device 1110-n to the file name, and the processing proceeds to S1311. The file name is, for example, the file name “USER0_R001_S002_T003_004_150917_19154512”. “19” indicates the time, “15” indicates the minute, “45” indicates the second, and “12” indicates the frame number.

  In S1311, the control unit 1206 determines whether or not frame division information is included in various types of information obtained by analysis of ancillary packet data by the signal analysis unit 1207. If frame division information is included (S1311), the control unit 1206 proceeds to S1312, and if not included (A 1311), the control unit 1206 proceeds to S1313. In S1312, the control unit 1206 adds frame division information to the file name, and proceeds to S1313.

  In step S1313, the control unit 1206 determines whether screen division information is included in various types of information obtained by analysis of ancillary packet data by the signal analysis unit 1207. If the screen division information is included (S1313), the control unit 1206 proceeds to S1314. If not included (S1313), the control unit 1206 proceeds to S1315. In step S1314, the control unit 1206 adds position coordinate information to the file name, and the process advances to step S1315. The file name is, for example, a file name "USER0_R001_S002_T003_004_150917_19154512_F1X0Y0". “F1” indicates a frame number, and “X0Y0” indicates position coordinates (0, 0).

  In S1315, the control unit 1206 determines whether a file having the same file name as the file name generated in the flow up to S1315 already exists in the recording medium 1204. If a file having the same file name already exists (S1315), the control unit 1206 proceeds to S1316, and if it does not exist (S1315), the control unit 1206 ends the setting of the file name. In S1316, the control unit 1206 adds a value incremented by one to the file name. For example, if the time code remains the same and the file "USER0_R001_S002_T003_004_150917_19154512_F1X0Y0" already exists, a character string "_00001" is added to this file name. Then, this added result is taken as the file name of the file to be recorded. If a file having a file name to which “_00001” is added already exists, the control unit 1206 adopts the file name “USER0_R001_S002_T003_004_150917_191515412_F1X0Y0_00002”.

  If the moving image data supplied from the imaging device 100 has no information as a source for setting a file name, and the recording device 1110-n also has no user setting information as a source for generating a file name, the recording device 1110 -N generates a file name according to the general rules. Further, division information may be added to the end of the name set in advance by the recording apparatus to set the file name.

  Each of the recording devices 1110-1 to 1110-8 determines the file name of the file to be recorded according to the procedure described with reference to FIG. 13. Thus, although the 8K / 120P moving image data captured by the imaging device 100 is divided and recorded as 60P / 4K moving image data in the recording devices 1110-1 to 1110-8 respectively, part of the file name Are standardized and information for restoration is also included. By sharing part of the file name, it becomes clear that the same moving image is divided and recorded. In addition, since the file name includes information indicating the dividing position of the original moving image in space and the dividing position on the time axis, the synthesis on space and the synthesis on the time axis for restoring the original moving image are also performed. It can be automated. For example, when each file is read from the recording apparatuses 1110-1 to 1110-8, it is also easy to restore the original 8K · 120P moving image data. For example, a moving image having a file name including the common name “USER0_R001_S002_T003_004_150917_19154512_F1” and ending in “X0Y0”, “X0Y1”, “X1Y0”, and “X1Y1” is synthesized. This combination can restore an 8K moving image.

  In the configuration shown in FIG. 12, the recording / reproducing unit 1211 records the image data generated by the demultiplexer 1203 on the recording medium 1204, but the output of the demultiplexer 1203 is developed by the development processing unit and the data is recorded on the recording medium 1204. You may.

  An operation of converting file names of moving image files (division moving image files) which are divided and recorded in the recording devices 1110-1 to 1110-8 will be described. FIG. 14 is a block diagram for explaining an example of a schematic configuration of a personal computer (PC) operating as a file name conversion device. FIG. 15 is a flowchart showing an example of file name conversion processing.

  In the PC 1400 shown in FIG. 14, a CPU (Central Processing Unit) 1401 is connected to an internal bus 1402 which is a transmission path for control signals and data signals between the respective components, and communicates data with the respective components, Perform calculations and control. The memory 1403 is a work area when the CPU 1401 executes a control program. The CPU 1401 implements the following functions by reading and executing the file name conversion program shown by the flowchart shown in FIG.

  The input device 1404 is a device for the user to operate, and is configured of a mouse and a keyboard. The output device 1405 is a device for notifying the user of data and the result of processing, and is configured of a display or the like.

  The storage device 1406 is a device in which the OS (operating system) of the PC 1400, application software, moving image files, and the like are stored, and is configured of an HDD (hard disk drive) or an SSD (solid state drive).

  The external interface 1407 is an interface for communicating with another device to read / write data, and includes any interface for connecting a peripheral device to an information device such as a USB terminal.

  The CPU 1401 loads a program for realizing the file name conversion process shown in FIG.

  In S1501, the CPU 1401 reads a file group to be changed in file name, and proceeds to S1502. The file read in S1501 is a divided moving image file recorded in the recording devices 1110-1 to 1110-8. These divided moving image files include various information at the time of imaging as metadata.

  In S1502, the CPU 1401 analyzes the metadata of the read moving image file, stores the analysis result in the memory 1403 for use in later processing, and proceeds to S1503.

  In S1503, the CPU 1401 determines whether or not the file is a divided moving image file based on the division information of the metadata analysis result. If both the number of spatial divisions and the number of temporal divisions of the metadata analysis result are 0 or there is no information on the number of divisions, the CPU 1401 determines that the file is not a divided moving image file and does not change the file name End the flow shown in FIG. If the file is a divided moving image file, the CPU 1401 proceeds to S1504.

  In step S1504, the CPU 1401 determines whether or not divided moving image files to be combined are present. For example, in the case where it is possible to acquire moving image files corresponding to the number of divisions having the same content for a predetermined element which is not changed even by division in the meta information, moving image files necessary for restoration are complete. Such information that is not changed even by division includes time code, payload ID, imaging date, user-defined name, reel number, scene number, take number and shot number. If all divided moving image files divided are complete, the CPU 1401 advances to S1505, and if not, the CPU 1401 advances to S1506.

  In S1506, the CPU 1401 adds division information to the original file name, and ends the flow shown in FIG. For example, the target file is changed to a file name of “original file name _F3X1Y0”.

  In S1505, the CPU 1401 determines whether or not there is a file having the same division information and the same time code in the acquired moving image file. This is because, depending on the setting or status of the imaging device or the recording device, a state in which the time code does not advance may occur in a few frames of the recording start or until the recording stop. If there is a file having the same time code, the CPU 1401 advances to S1507, and if not, the CPU 1401 advances to S1508.

  In S1507, the CPU 1401 changes the file name to a name obtained by adding the division information to the original file name, except for one of the files in which both the division information and the time code are the same. For example, the file name of the target file is changed to a file name of “original file name _F3X1Y0”.

  In S1508, the CPU 1401 changes the file name of a file in which one or both of the division information and the time code are different to “common file name_division information”. Here, the common file name includes, for example, a user-defined name, a reel number, a scene number, a take number, a shot number, an imaging date, and a time code, but may be a name separately set by the user. As a result, the file name includes, for example, the common name “USER0_R001_S002_T003_004_150917_19154512_F1”, and the end becomes “X0Y0”, “X0Y1”, “X1Y0” or “X1Y1”, respectively. The 8K moving image can be restored by combining the moving image of the file including the common name.

  For example, it is assumed that the file name of a divided moving image file obtained by dividing and recording an 120K 8K moving image is changed in the above-described procedure. In this case, the end of the time code is 00, 01, ..., 28, 29, and a file including the names "_F1", "_F2", "_F3" and "_F4" is generated for each time code. These files become moving images of 120 frames captured per second.

  By changing the file name as described above, it is possible to change the file names of moving image files divided and recorded in a plurality of recording devices into names that can easily relate to each other, so editing and management of moving image files is easy. become.

  The file name conversion process shown in FIG. 15 is also applicable to the names of directories or folders that accommodate divided moving image files.

  Although the embodiment has been described in which the file name of the moving image file recorded in the recording apparatus 1110-1 to 1110-8 is converted by the PC 1400, the file name conversion function described with reference to FIG. It may be incorporated into 1110-8. For example, the recording devices 1110-1 to 1110-8 record the moving image to be input as a temporary file name, and change the temporary file name to a file name determined by the file name conversion process shown in FIG. .

  Although the example of dividing a moving image into 16 pixels with a pixel configuration of one frame of 8K4K and a frame rate of 120P has been described, the number of pixels of one screen, the frame rate, and the number of divisions are not limited to this example. Further, the number of divisions in space and the number of divisions on the time axis are not limited to the examples described in the above embodiments.

Claims (7)

A moving image file generated by dividing a moving image in space and / or time, and holding division information as metadata indicating division positions in the space and / or time Means for reading an image file,
A unit for detecting the division information from metadata of the moving image file;
A file name conversion device comprising: changing means for changing a file name of the moving image file according to the division information.   The file name conversion apparatus according to claim 1, wherein the changing unit changes the file name by adding a character string indicating the content of the division information to the file name of the moving image file. . The image processing apparatus further includes a determination unit that determines whether a plurality of moving image files read by the reading unit are divided from the same moving image.
The changing means includes file names of a plurality of moving image files generated by division from the same moving image, a common character string, and a character string determined from the division information of each of the plurality of moving image files. The file name conversion device according to claim 1 or 2, wherein the combination is changed.   The determination means is a time code, a frame rate, a resolution, a bit depth, a signal configuration, an imaging date, a user-defined name, a reel number, in meta information of each of a plurality of moving image files read by the reading means. When predetermined information among the scene number, the take number and the shot number is the same, it is determined that a plurality of moving image files read by the reading unit are divided from the same moving image. The file name conversion device according to claim 3. Reading a moving image file generated by dividing the moving image in space and / or time together with metadata including division information indicating the division in either or both of the space and / or time;
Detecting the division information from metadata of the moving image file;
And changing the file name of the moving image file according to the division information. A file name conversion program for converting a file name of a moving image file generated by dividing a moving image in space and / or time or both.
Computer,
Means for reading the moving image file together with metadata including division information indicating division in the space and / or time;
A unit for detecting the division information from metadata of the moving image file;
A file name conversion program which functions as changing means for changing a file name of the moving image file according to the division information. A recording system comprising an imaging device for outputting in parallel divided moving images obtained by dividing a moving image in space or time or both, and a plurality of recording devices for recording each of the divided moving images output from the imaging device There,
The image pickup apparatus divides the moving image output from the image pickup means by either or both of an image pickup means, the image pickup means, and image specifying information for specifying the moving image in each divided moving image, the space, and Output means for adding additional information including division information indicating division positions of division in any one or both of time and outputting in parallel in a predetermined moving image format,
The recording apparatus comprises means for taking in a divided moving image of the predetermined moving image format output from the imaging device, recording means for recording the taken in divided moving image on a recording medium, and from the taken in divided video A recording system comprising: means for separating the additional information; and means for determining a file name of the divided moving image with reference to the additional information separated from the divided moving image.

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