Method of storing and transmitting image data as image file suitable for image search

Claim 3

A method in accordance with claim 1, wherein the step (2) includes the step of: (2-1) generating a reduced image data expressing said reduced image for each pixel, and (2-2) compressing said reduced image data to generate a reduced and compressed image data as said second image data.

Claim 4

A method in accordance with claim 2, wherein the step (1) includes the steps of: (1-1) preparing an original image data expressing said original image for each pixel and (1-2) compressing said original image data to generate a compressed original image data as said first image data.

Claim 5

A method in accordance with claim 3, wherein the step (2-1) includes the step of: (2-11) taking a weighted average of said original image data every two or more pixels to generate said reduced image data.

Claim 6

A method in accordance with claim 4, wherein said original image data is a gradation data expressing said original image with n bits for each pixel, where n is an integer larger than one, said reduced image data includes a plurality of n bit data expressing gradation of said reduced image for each pixel and the step (2) is conducted in serial order of bit planes of said reduced image data.

Claim 7

A method in accordance with claim 5, wherein the step (2-2) includes the steps of: (2-21) extracting respective i-th significant bits from said plurality of n bit data, where i is an integer, (2-22) compressing a bit plane consisting of said respective i-th significant bits to generate i-th compressed data, and (2-23) repeating the steps (2-21) and (2-22) while incrimenting i from one to m , where m is an integer satisfying 1 ≦ m ≦ n, said reduced and compressed image data including said i-th compressed data for all of i satisfying 1 ≦ i ≦ m.

Claim 8

A method in accordance with claim 6, wherein the integers m and n are identical with each other.

Claim 9

A method in accordance with claim 7, wherein the step (2-22) includes the step of: encoding said bit plane into run-length codes.

Claim 10

A method in accordance with claim 8, wherein a plurality of scanning lines are defined on said original image, the step (1-2) includes the step of: (1-21) compressing said original image data in serial order of scanning lines.

Claim 11

A method in accordance with claim 9, wherein the step (1-21) includes the step of: encoding said original image data in accordance with a predictive coding rule.

Claim 14

A method in accordance with claim 11, wherein the step (2) includes the steps of: (2-1) generating a reduced image data expressing said reduced image for each pixel, and (2-2) compressing said reduced image data to generate a reduced and compressed image data as said second image data.

Claim 15

A method in accordance with claim 12, wherein the step (1) includes the steps of: (1-1) preparing an original image data expressing said original image for each pixel, and (1-2) compressing said original image data to generate a compressed original image data as said first image data.

Claim 16

A method in accordance with claim 13, wherein the step (2-1) includes the step of: (2-11) taking a weighted average of said original image data every two or more pixels to generate said reduced image data.

Claim 17

A method in accordance with claim 14, wherein said original image data is a gradation data expressing said original image with n bits for each pixel, where n is an integer larger than one, said reduced image data includes a plurality of n bit data expressing gradation of said reduced image for each pixel, and the step (2-2) is conducted in serial order of bit planes of said reduced image data.

Claim 18

A method in accordance with claim 15, wherein the step (2-2) includes the steps of: (2-21) extracting respective i-th significant bits from said plurality of n bit data, where i is an integer, (2-22) compressing a bit plane consisting of said respective i-th significant bits to generate i-th compressed data, and (2-23) repeating the steps (2-21) and (2-22) while incrimenting i from one to m , where m is an integer satisfying 1 ≦ m ≦ n, said reduced and compressed image data including said i-th compressed data for all of i satisfying 1 ≦ i ≦ m.

Claim 19

A method in accordance with claim 16, wherein the integers m and n are identical with each other.

Claim 20

A method in accordance with claim 17, wherein the step (4) includes the steps of: (4-1) transmitting said file header and said reduced and compressed image data to said image processing system, and (4-2) transmitting said compressed original image data to said image processing system after the step (4-1) is completed.

Claim 21

A method in accordance with claim 18, wherein the step (4-1) includes the steps of: (4-11) transmitting said file header to said image processing system, and (4-12) transmitting said i-th compressed data for all of i satisfying 1 ≦ i ≦ m to said image processing system in an ascent order of i .

Claim 22

An image search system useful for searching an image file for a desired original image, said system comprising the steps of: (1) an image display having a display plane, (2) means for generating a first image data expressing a given original image, (3) means for generating a second image data expressing a reduced image of said original image, size of said original image being equal to or smaller than size of said display plane, (4) means for generating a file header including an identification data for identifying said image file, (5) memory means for storing a combination of said file header, said first image data and said second image as said image file, and (6) means for reading out said second image data from said memory means to deliver said second image data to said image display, whereby said reduced image is displayed on said display plane for image search.

Claim 23

An image search system useful for searching an image file for a desired original image, said system comprising the steps of: (1) an image display having a display plane, (2) means for generating a first image data expressing a given original image, (3) means for generating a second image data expressing a reduced image of said original image, size of said original image being equal to or smaller than size of said display plane, (4) means for generating a file header including an identification data for identifying said image file, (5) memory means for storing a combination of said file header, said first image data and said second image as said image file, and (6) means for reading out said second image data from said memory means to deliver said second image data to said image display, whereby said reduced image is displayed on said display plane for image search.

Claim 24

An image search system in accordance with claim 20, wherein said means (3) includes: (3-1) means for generating a reduced image data expressing said reduced image for each pixel, and (3-2) means for compressing said reduced image data to generate said second image data.

Claim 25

An image search system in accordance with claim 21, wherein said original image is a gradation data expressing gradation of said original image for each pixel, said reduced image data includes a plurality of n bit data expressing gradation of said reduced image for each pixel, where n is an integer larger than one, and said means (3-2) comprises: (3-21) means for extracting respective i-th significant bits from said plurality of n bit data, where i is an integer, (3-22) means for compressing a bit plane consisting of said respective i-th significant bits to generate i-th compressed data, and (3-23) means for enabling said means (3-21) and (3-­22) while incrimenting i from one to m , where m is an integer satisfying 1 ≦ m ≦ n, said second image data including said i-th compressed data for all of i satisfying 1 ≦ i ≦ m.

Claim 26

An image search system in accordance with claim 22, wherein said means (6) includes: (6-1) means for delivering said i-th compressed data for all of i satisfying 1 ≦ i ≦ m to said image display in an ascent order of i , whereby gradation of said reduced image displayed on said display plane becomes fine step by step.

Claim 27

An image search system in accordance with claim 23, further comprising: (7) means for disenabling said means (6-1) in response to a command signal inputted into said image search system.

Claim 28

An image search system in accordance with claim 24, further comprising: (8) means for receiving said first image data, said second image data and said file header from said means (2), (3) and (4), respectively, (9) means for transmitting said file header, said second image data and said first image data from said means (8) to said means (5) in that order, (10) means for inputting said command signal with manual operation, and (11) means for disenabling said means (9) in response to said command signal.