JPH08237681A - Color extraction device - Google Patents

Color extraction device

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Publication number
JPH08237681A
JPH08237681A JP7807995A JP7807995A JPH08237681A JP H08237681 A JPH08237681 A JP H08237681A JP 7807995 A JP7807995 A JP 7807995A JP 7807995 A JP7807995 A JP 7807995A JP H08237681 A JPH08237681 A JP H08237681A
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signal
limit threshold
output
hue
color
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JP7807995A
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Japanese (ja)
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Toshihiko Ota
年彦 太田
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Sharp Takaya Denshi Kogyo Kk
シャープタカヤ電子工業株式会社
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Abstract

PURPOSE: To constitute a highly accurate color extraction circuit at a low cost, to perform miniaturization and to reduce weight by connecting the output of a timing generation circuit to the control input of a changeover switch.
CONSTITUTION: Composite color picture signals 2 from a color television camera 1 are inputted to a filter 3 and also inputted to a quadrature demodulator 11. The output of the filter 3 is inputted to the changeover switch 6, inputted to an AD converter 4 and converted to digital signals. Lightness signals 21 which are AD conversion output are compared with a lightness upper limit threshold value signal 26 and a lightness lower limit threshold value signal 27 in a comparator 5 and the output is supplied to the timing generation circuit 18. The output of the timing generation circuit 18 is inputted to the changeover switch 6. Then, color input picture signals are converted to black and white picture signals and outputted, a color whose lightness, hue and saturation are present within a fixed range is selectively extracted from the color input picture signals simultaneously and the black and white picture signals of the part are turned to a pseudo black level and outputted.
COPYRIGHT: (C)1996,JPO

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【産業上の利用分野】この発明はカラー画像上の特定の色を抽出し汎用の白黒画像処理装置が認識可能な白黒画像信号に変換して出力する画像処理装置に関するものである。 FIELD OF THE INVENTION The present invention relates to an image processing apparatus for extracting a specific color on a color image generic monochrome image processing apparatus converts the recognizable black-and-white image signal.

【0002】 [0002]

【従来の技術】従来の装置は次のような方式により色抽出をおこなっていた。 Conventional devices were subjected to color extraction by the following manner. (イ)RGB方式 カラーテレビカメラからのR、G、B信号それぞれの上限下限を設定し、その範囲内に入った色を抽出する方式。 (B) RGB scheme set R, G, and B signals each upper and lower limits of the color television camera, extracts color that contains within its scope methods. (ロ)映像色差信号方式 カラーテレビカメラからのR,G,B信号を明度信号、 (Ii) brightness signals R, G, and B signals from the video chroma signal type color television camera,
色差信号R−Y、色差信号B−Yに変換し、それぞれに上限下限を設定し、その設定範囲内に入った色を抽出する方式。 Method for converting the color difference signals R-Y, the color difference signal B-Y, and set the upper and lower limits, respectively, to extract the color falls within the set range. (ハ)色度座標xy方式 R,G,B信号から近似的にXYZ表色系における色度座標xy値に変換しx値y値それぞれに上限下限を設定し、その設定範囲内に入った色を抽出する方式。 (C) set the upper and lower limits to the chromaticity coordinates xy scheme R, G, respectively x value y value is converted into chromaticity coordinates xy values ​​in approximately XYZ colorimetric system from B signals, entered within the set range method to extract the color. (ニ)色相、彩度、明度方式 R,G,B信号をハードウエア又はソフトウエアにより色相、彩度明度値に変換し、それぞれに上限下限を設定し、その範囲内に入った色を抽出する方式。 (D) Hue, saturation, lightness scheme R, G, hue and B signals by hardware or software, converts the saturation brightness value, setting the upper and lower limits, respectively, extracts color that has entered within the range method to.

【0003】 [0003]

【発明が解決しようとする課題】従来の方式では次のような欠点があった。 [Problems that the Invention is to solve the above had the following drawbacks in the conventional manner. (イ)RGB方式は、明るさの変動に非常に弱い。 (B) RGB system is very vulnerable to fluctuations in brightness. (ロ)映像色差信号方式は、RGB方式と比べて明るさの変動には強いが上限下限範囲の変化と人間の色感覚がかけはなれているため、範囲の設定が非常に難しい。 (B) video chrominance signal system, since although strong fluctuations in brightness as compared with the RGB system are far changes and human color perception of upper and lower limits of the range, the range of setting is very difficult. (ハ)色度座標xy方式は、RGB方式と比べて明るさの変動には強いが上限下限範囲の変化と人間の色感覚がずれているので範囲の設定が難しい。 (C) the chromaticity coordinates xy system, although strong fluctuations in brightness as compared with the RGB system setting range is difficult because is shifted changes and human color perception upper and lower limit range. (ニ)色相、彩度、明度方式は前述の(イ)、(ロ)、 (D) Hue, saturation, lightness method described above (a), (b),
(ハ)方式と比べて明るさの変動に強く、上限下限範囲の設定も簡単であるが、ハードウエア方式は規模が大きく高価であり、ソフトウエア方式は処理に時間がかかり実時間処理が出来ない。 (C) strongly to changes in brightness as compared with the system, but it is easy to set the upper limit and lower limit range, hardware system is the scale is large and expensive, the software system is the real-time processing can take a long time to process Absent.

【0004】 [0004]

【問題を解決するための手段】図1は本発明の実施例を示したものである。 Figure 1 [Means for solving the problem] is an illustration of an embodiment of the present invention. カラーテレビカメラ(1)からの複合カラー画像信号(2)は、フィルタ(3)に入力されるとともに直交復調器(11)に入力される。 Color TV composite color image signal from the camera (1) (2) is input is input to the filter (3) to the quadrature demodulator (11). フィルタ(3)の出力は切り替えスイッチ(6)に入力されるとともにAD変換器(4)に入力されデジタル信号に変換される。 The output of the filter (3) is converted into a digital signal is input to the AD converter (4) is input to the changeover switch (6). AD変換器出力である明度信号(21)は比較器(5)で明度上限閾値信号(26)及び明度下限閾値信号(27)と比較され、その出力はタイミング発生回路(18)に供給される。 Value signal is an AD converter output (21) is compared to a comparator (5) in luminosity upper limit threshold signal (26) and luminosity lower limit threshold signal (27), the output is supplied to a timing generating circuit (18) .

【0005】直交復調器(11)に入力された複合カラー画像信号は色差信号R−Y(19)及び色差信号B− [0005] inputted to the quadrature demodulator (11) a composite color image signal the color difference signal R-Y (19) and a color difference signal B-
Y(20)に復調され、AD変換器(12)及びAD変換器(13)によりそれぞれデジタル信号に変換されたのち、ROM(14)及びROM(15)のアドレス端子に入力される。 Is demodulated into Y (20), after being converted into digital signals by the AD converter (12) and the AD converter (13), is inputted to the address terminals of the ROM (14) and ROM (15). ROM(14)及びROM(15)は入力された色差信号R−Y(19)及び色差信号B−Y ROM (14) and ROM (15) the input color difference signal R-Y (19) and a color difference signal B-Y
(20)に相当する色相信号(22)及び彩度信号(2 Hue signal corresponding to (20) (22) and chroma signal (2
3)をそれぞれ出力する。 3) to the output, respectively. 色相信号(22)は比較器(16)で色相上限閾値信号(28)及び色相下限閾値信号(29)と比較され、その出力はタイミング発生回路(18)に供給される。 Hue signal (22) is compared with the hue upper limit threshold signal in a comparator (16) (28) and the hue lower limit threshold signal (29), the output is supplied to a timing generating circuit (18). 彩度信号(23)は比較器(17)で彩度上限閾値信号(30)及び彩度下限閾値信号(31)と比較され、その出力もタイミング発生回路(18)に供給される。 Saturation signal (23) is compared with the saturation limit threshold signal in a comparator (17) (30) and a saturation lower limit threshold signal (31), its output is also supplied to the timing generation circuit (18).

【0006】一方カラーテレビカメラ(1)で使用される垂直同期信号(24)、水平同期信号(25)、比較器(5)、比較器(16)及び比較器(17)の出力信号を入力信号とするタイミング発生回路(18)の出力は、切り替えスイッチ(6)の制御入力に接続される。 On the other hand vertical synchronizing signal used color by a television camera (1) (24), a horizontal synchronizing signal (25), an output signal of the comparator (5), a comparator (16) and a comparator (17) the output of the timing generating circuit to the signal (18) is connected to the control input of the changeover switch (6).

【0007】切り替えスイッチ(6)は白黒画像信号(10)と黒レベル信号(32)をタイミング発生回路(18)の出力信号で切り替えて、カメラ信号(42) [0007] changeover switch (6) is switched by the output signal of the monochrome image signal (10) and the black level signal (32) the timing generator circuit (18), a camera signal (42)
として出力している。 It is output as. 以下、本実施例の動作を説明する。 Hereinafter, an operation of this embodiment.

【0008】 [0008]

【作用】図2に緑赤青の三色ストライプの原画像をカラーテレビカメラで走査した場合の各部の波形を示す。 [Action] shows the waveform of each part in the case of scanning the original image of the three-color stripe of Midoriaka blue in color television camera in Figure 2. 本例では赤色を検出した際、白黒画像処理装置(7)に対して黒レベル信号(32)を出力するものとする。 Upon detection of red in this example, and outputs a black level signal (32) relative to the black-and-white image processing unit (7). 複合カラー画像信号(2)は色相に応じた位相のカラーサブキャリア信号を有している。 Composite color image signal (2) have a phase color subcarrier signal corresponding to the hue. 複合カラー画像信号(2) Composite color image signal (2)
はフィルタ(3)によりカラーサブキャリア信号を除かれ白黒画像信号(10)となりAD変換器(4)によりデジタル変換され明度信号(21)となったのち比較器(5)に入力される。 Is input to the filter (3) by black and white image signal removed of color sub-carrier signal (10) and an AD converter (4) by a digital-converted brightness signal (21) and since then the comparator (5). 本例では赤色を抽出するため明度信号(21)の赤色に相当するレベルを挟み込む様に上方に明度上限閾値信号(26)及び下方に明度下限閾値信号(27)が入力されるものとし、上限下限範囲内に明度信号(21)が入った場合に比較器(5)の出力信号aが高レベルとなる。 It shall lightness signal (21) luminosity upper limit threshold signal upward so as to sandwich the level corresponding to the red (26) and lower the luminosity lower limit threshold signal for extracting the red (27) is input in this example, the upper limit the output signal a of the comparator (5) if the brightness signal (21) is within the lower range is high. 比較器(5)の出力信号aは赤色部分と青色部分の明度レベルが同じため両者のタイミングで高レベルとなる。 The output signal a of the comparator (5) is brightness level of the red portion and a blue portion becomes high level at the timing of both for the same.

【0009】一方複合カラー画像信号(2)は直交復調器(11)に入力され色差信号R−Y(19)及び色差信号B−Y(20)に復調される。 On the other hand the composite color image signal (2) is demodulated in the input to the quadrature demodulator (11) color-difference signals R-Y (19) and a color difference signal B-Y (20). なお、直交復調器(11)は公知の技術により容易に構成できるものであり、詳細は省略した。 Incidentally, the quadrature demodulator (11) are those that can be easily constructed by known techniques, details are omitted. AD変換器(12)及びAD変換器(13)によりデジタル信号に変換された色差信号R AD converter (12) and the AD converter (13) by being converted into digital signals color difference signals R
−Y(19)及び色差信号B−Y(20)は色相信号(22)及び彩度信号(23)のデータが書き込まれているROM(14)の及びROM(15)のアドレスを指定する。 -Y (19) and a color difference signal B-Y (20) specifies the address of and ROM (15) ROM (14) in which the data of the hue signal (22) and chroma signal (23) is written.

【0010】ここで色差信号R−Y(19)及び色差信号B−Y(20)から色相信号(22)へ変換を行うR [0010] R performed here converted from the color difference signals R-Y (19) and a color difference signal B-Y (20) into a hue signal (22)
OM(14)の動作説明を行う。 Carry out the description of the operation of the OM (14). 色空間における色相及び彩度は図3のとおり色差信号R−Y(19)及び色差信号B−Y(20)を直交軸とする2次元空間ベクトルの偏角と長さにあたる。 Hue and saturation in color space corresponds to the polarization angle and the length of the two-dimensional space vector orthogonal axis color difference signals R-Y (19) and a color difference signal B-Y (20) shown in Figure 3. ここで前述の色差信号の大きさが決まればベクトルの偏角つまり色相は三角関数の計算により求められる。 Here declination clogging hue vectors determined if the magnitude of the aforementioned color difference signal is obtained by calculation of a trigonometric function. つまり色差信号R−Y(19)及び色差信号B−Y(20)のすべての組み合わせの答えをあらかじめROM(14)に書き込んでおくことにより瞬時に色相信号に変換することができる。 That can be converted into the hue signals instantaneously by previously writing the answers of all the combinations of the color difference signal R-Y (19) and a color difference signal B-Y (20) in advance ROM (14). 同様の原理でROM(15)には色差信号R−Y(19)及び色差信号B−Y(20)のすべての組合せに対する彩度信号を書き込んでいる。 Writing the luminance signal for all combinations of the color difference signal R-Y (19) and a color difference signal B-Y (20) in the ROM (15) on the same principle.

【0011】本例では赤色を抽出するため色相信号(2 [0011] hue signal for extracting the red color in this example (2
2)の赤色に相当するレベルを挟み込む様に上方に色相上限閾値信号(28)及び下方に色相下限閾値信号(2 Hue upper limit threshold signal upwardly so as to sandwich the level corresponding to red 2) (28) and the hue lower limit threshold signal downwardly (2
9)が入力されるものとし、上限下限範囲内に入った色部分が比較器(16)の出力信号bとして出力される。 Shall 9) is input, the color portion enters the upper and lower limit range is output as an output signal b of the comparator (16).
彩度についても同様なため詳細は省略する。 For more information because it is also omitted for saturation.

【0012】タイミング発生回路(18)は信号a、信号b及び信号cがすべて高レベルのとき垂直同期信号(24)及び水平同期信号(25)にもとづき信号dを高レベルにする。 [0012] The timing generating circuit (18) is a signal a, the signal b and the signal c is a signal d based on the vertical synchronizing signal (24) and the horizontal synchronizing signal (25) when all the high level to the high level. それに伴いカメラ信号(42)には黒レベル信号(32)が出力される。 A black level signal (32) is output to the camera signal along with it (42). なお、タイミング発生回路(18)は公知の技術により容易に構成できるものであり、詳細は省略した。 The timing generator circuit (18) are those that can be easily constructed by known techniques, details are omitted.

【0013】以上述べてきたように、本発明はカラー入力画像信号を白黒画像信号に変換して出力すると同時に当該カラー入力画像信号の中から明度、色相、彩度が一定範囲内にある色を選択的に抽出し、その部分の白黒画像信号を擬似的に黒レベルにして、出力するものである。 [0013] As has been described above, the present invention is the brightness from the color input image signals monochrome images the signal to convert and output simultaneously the color input image signals, a hue, a color with saturation within a predetermined range selectively extracted, and the monochrome image signal of the portion to pseudo black level, and outputs.

【0014】 [0014]

【実施例】図1では白黒画像処理装置(7)が2値化型であるが多値化型の白黒画像処理装置が利用できる。 EXAMPLES In Figure 1 the black-and-white image processing unit (7) but is binary type can be utilized multi-valued type of black-and-white image processing apparatus. また図のROM(14)及びROM(15)はRAM、ゲートアレイ等データを記憶できるものならすべて利用できる。 The figure ROM (14) and ROM (15) can comprise RAM, all available if it can store a gate array data.

【0015】明度上限閾値信号(26)、明度下限閾値信号(27)、色相上限閾値信号(28)、色相下限閾値信号(29)、彩度上限閾値信号(30)、彩度下限閾値信号(31)の設定方法についてはいろいろな方法が考えられる。 The luminosity upper limit threshold signal (26), luminosity lower limit threshold signal (27), the hue upper limit threshold signal (28), the hue lower limit threshold signal (29), the saturation limit threshold signal (30), the saturation lower limit threshold signal ( various methods can be considered is how to set up the 31).

【0016】図4は、比較器(5)に入力する明度上限閾値信号(26)及び、明度下限閾値信号(27)をあらかじめ数種類の記憶器(33)に記憶しておき選択スイッチ(34)にて選択できる様にしたものである。 [0016] Figure 4 is a comparator (5) luminosity upper limit threshold signal input (26) and, in advance several storage devices brightness lower limit threshold signal (27) (33) selection switch may be stored in the (34) in which was set to be selected in. 比較器(16)及び比較器(17)についても上記説明から容易に類推できるため詳細は省略した。 Comparator (16) and a comparator for (17) is also omitted details because it can easily inferred from the above description.

【0017】図5は、比較器(5)に入力する明度上限閾値信号(26)及び明度下限閾値信号(27)を図4 [0017] Figure 5 includes a comparator luminosity upper limit threshold signal to be input to the (5) (26) and luminosity lower limit threshold signal (27) Figure 4
と同様な方法で選択すると同時に明度上限設定信号(3 When a selection is made the same way at the same time luminosity upper limit setting signal (3
9)と明度上限閾値信号(27)を加算器(35)により加算し、明度下限閾値信号(27)から明度下限設定信号(40)を減算器(36)で減算することにより各々の閾値信号を個別に設定できる様にしたものである。 9) and added by the adder (35) the luminosity upper limit threshold signal (27), each of the threshold signal by subtracting the luminosity lower limit setting signal from the luminosity lower limit threshold signal (27) (40) by the subtracter (36) the one in which was set to be set individually.
比較器(16)及び比較器(17)についても上記説明から容易に類推できるため詳細は省略した。 Comparator (16) and a comparator for (17) is also omitted details because it can easily inferred from the above description.

【0018】図6は、比較器(5)に入力する明度信号(21)を設定時に記憶器(37)に記憶しておき、その出力に明度上限設定信号(39)を加算器(38)により加算して明度上限閾値信号(26)を作り、また記憶器(37)の出力から明度下限設定信号(40)を減算器(41)により減算することにより、明度下限閾値信号(27)を作る例を示したものである。 [0018] Figure 6, comparator setting the brightness signal (21) to be input to the (5) is stored in the storage unit (37), the adder lightness upper limit setting signal (39) to its output (38) make luminosity upper limit threshold signal by adding (26) by and by subtracting the storage unit luminosity lower limit setting signal from the output (37) (40) a subtractor (41), the luminosity lower limit threshold signal (27) It illustrates an example to make. 比較器(1 Comparator (1
6)及び比較器(17)についても上記説明から容易に類推できるため詳細は省略した。 About 6) and a comparator (17) is also omitted details because it can easily inferred from the above description.

【発明の効果】本発明により以下の効果が期待できる。 According to the present invention by the following effect can be expected. (1)従来高価であった高精度色抽出回路を非常に安価に構成できる。 (1) which has heretofore been expensive high-precision color extracting circuit can be made very low cost. (2)従来の白黒画像処理装置に接続することにより高度な画像処理が可能となる。 (2) advanced image processing becomes possible by connecting to a conventional black-and-white image processing apparatus. (3)ハードウエア規模が小さいため小型軽量の装置にできる。 (3) the device small and lightweight for hardware scale is smaller.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】本発明の一実施例を示すブロック図である。 1 is a block diagram showing an embodiment of the present invention.

【図2】本発明の動作を示すタイミング図である。 Is a timing diagram illustrating the operation of the present invention; FIG.

【図3】本発明の動作を示す原理図である。 3 is a principle diagram illustrating the operation of the present invention.

【図4】本発明の他の実施例を示すブロック図である。 4 is a block diagram showing another embodiment of the present invention.

【図5】本発明の他の実施例を示すブロック図である。 5 is a block diagram showing another embodiment of the present invention.

【図6】本発明の他の実施例を示すブロック図である。 6 is a block diagram showing another embodiment of the present invention.

【符号の説明】 DESCRIPTION OF SYMBOLS

(1)はカラーテレビカメラ (2)は複合カラー画像信号 (3)はフィルタ (4)はAD変換器 (5)は比較器 (6)は切り替えスイッチ (7)は白黒画像処理装置 (8)は比較器 (9)は二値化閾値信号 (10)は白黒画像信号 (11)は直交復調器 (12)はAD変換器 (13)はAD変換器 (14)はROM (15)はROM (16)は比較器 (17)は比較器 (18)はタイミング発生回路 (19)は色差信号R−Y (20)は色差信号B−Y (21)は明度信号 (22)は色相信号 (23)は彩度信号 (24)は垂直同期信号 (25)は水平同期信号 (26)は明度上限閾値信号 (27)は明度下限閾値信号 (28)は色相上限閾値信号 (29)は色相下限閾値信号 (30)は彩度上限閾値信号 (31)は彩 (1) a color television camera (2) is a composite color image signal (3) filter (4) is an AD converter (5) is a comparator (6) selector switch (7) is a black-and-white image processing unit (8) the comparator (9) is binarized threshold signal (10) is a monochrome image signal (11) is a quadrature demodulator (12) is AD converter (13) AD converter (14) is ROM (15) is ROM (16) is a comparator (17) is a comparator (18) the timing generator (19) is the color difference signal R-Y (20) is a color difference signal B-Y (21) is lightness signal (22) is a hue signal ( 23) the chroma signal (24) is a vertical synchronizing signal (25) is a horizontal synchronizing signal (26) luminosity upper limit threshold signal (27) luminosity lower limit threshold signal (28) hue upper limit threshold signal (29) is a hue lower limit threshold signal (30) is the saturation limit threshold signal (31) is Aya 下限閾値信号 (32)は黒レベル信号 (33)は記憶器 (34)は選択スイッチ (35)は加算器 (36)は減算器 (37)は記憶器 (38)は加算器 (39)は明度上限設定信号 (40)は明度下限設定信号 (41)は減算器 (42)はカメラ信号 The lower limit threshold signal (32) is a black level signal (33) memorizing device (34) selection switch (35) is an adder (36) is a subtractor (37) memorizing device (38) is an adder (39) luminosity upper limit setting signal (40) is luminosity lower limit setting signal (41) is a subtractor (42) is a camera signal

Claims (4)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】(イ)カラーテレビカメラ(1)からの信号をフィルタ(3)により処理した白黒テレビ信号(1 1. A (i) B & W television signal a signal from a color television camera (1) was treated by the filter (3) (1
    0)と黒レベル信号(32)を切り替える切り替えスイッチ(6)を設ける。 0) and providing a changeover switch (6) for switching the black level signal (32). (ロ)該白黒画像信号(10)をデジタル信号に変換するAD変換器(4)と該AD変換器の出力信号である明度信号(21)を明度上限閾値信号(26)及び明度下限閾値信号(27)と比較する比較器(5)を設ける。 (B) the white AD converter (4) and the value signal (21) the luminosity upper limit threshold signal (26) is the output signal of the AD converter for converting black image signal (10) into a digital signal and luminosity lower limit threshold signal (27) a comparator (5) to be compared with the provision. (ハ)該カラーテレビカメラ(1)からの複合カラー画像信号(2)を色差信号R−Y(19)及び色差信号B (C) the composite color image signal (2) color difference signal R-Y (19) of the color TV camera (1) and a color difference signal B
    −Y(20)に変換する直交復調器(11)を設ける。 Quadrature demodulator for converting the -Y (20) provided (11). (ニ)該色差信号R−Y(19)及び該色差信号B−Y (D) the color difference signals R-Y (19) and the color difference signal B-Y
    (20)を各々デジタル信号に変換するAD変換器(1 (20) AD converter each for converting the digital signal (1
    2)及びAD変換器(13)を設ける。 2) and AD converter (13) provided. (ホ)該AD変換器(12)及び該AD変換器(13) (E) said AD converter (12) and said AD converter (13)
    の出力を色相信号(22)に変換するROM(14)及び彩度信号に変換するROM(15)を設ける。 The ROM (14) for converting the hue signal (22) output and providing a ROM (15) for converting the chroma signal. (ヘ)該色相信号(22)と色相上限閾値信号(28) (F) the hue signal (22) and the hue upper limit threshold signal (28)
    及び色相下限閾値信号(29)を比較する比較器(1 And hue lower limit threshold signal comparator for comparing (29) (1
    6)を設ける。 6) providing a. (ト)該彩度信号(23)と彩度上限閾値信号(30) (G) 該彩 degree signal (23) and the saturation limit threshold signal (30)
    及び彩度下限閾値信号(31)を比較する比較器(1 And a comparator for comparing the saturation limit threshold signal (31) (1
    7)を設ける。 7) providing a. (チ)該比較器(5)、該比較器(16)及び該比較器(17)の出力信号によって制御され、かつカラーテレビカメラ(1)又は外部より入力される垂直同期信号(24)及び水平同期信号(25)によって決定されるタイミングに一定期間信号を出力するタイミング発生回路(18)を設ける。 (H) the comparator (5) it is controlled by the output signal of the comparator (16) and said comparator (17), and color TV camera (1) or vertical synchronization signal (24) inputted from the outside and horizontal synchronizing signal (25) providing a timing generating circuit for outputting a constant period signal to timing determined (18) by. (リ)該タイミング発生回路(18)の出力を切り替えスイッチ(6)の制御入力に接続する。 Connected to the control input of the switch to switch the output of the (re) The timing generation circuit (18) (6). 以上のごとく構成された色抽出装置。 Above as constructed color extraction unit.
  2. 【請求項2】(イ)選択スイッチ(34)の指定によってパターンの異なる明度上限閾値信号(26)と明度下限閾値信号(27)を出力する記憶器(33)を設ける。 Wherein (i) providing different luminosity upper limit threshold signal of the pattern by specifying the selection switch (34) and (26) luminosity lower limit threshold signal storage unit for outputting (27) (33). (ロ)色相上限閾値信号(28)と色相下限閾値信号(29)を出力する記憶器を設ける。 (B) hue upper limit threshold signal (28) and the hue lower limit threshold signal (29) providing a storage device for outputting. (ハ)彩度上限閾値信号(30)と彩度下限閾値信号(31)を出力する記憶器を設ける。 (C) the saturation limit threshold signal (30) and providing a memory for outputting a saturation lower limit threshold signal (31). 以上のごとく構成された請求項1の色抽出装置。 Above as constructed color extraction apparatus according to claim 1.
  3. 【請求項3】(イ)明度上限閾値信号(26)と明度上限設定信号(39)を加える加算器(35)を設ける。 Wherein providing (i) luminosity upper limit threshold signal (26) and an adder adding the luminosity upper limit setting signal (39) (35). (ロ)明度下限閾値信号(27)から明度下限設定信号(40)を減ずる減算器(36)を設ける。 (B) a subtracter subtracting the luminosity lower limit setting signal (40) from the luminosity lower limit threshold signal (27) provided (36). (ハ)色相上限閾値信号(28)と色相上限設定信号を加える加算器を設ける。 (C) the hue upper limit threshold signal (28) and providing the adders adding a hue upper limit setting signal. (ニ)色相下限閾値信号(29)から色相下限設定信号を減ずる減算器を設ける。 (D) providing a subtracter for subtracting the hue lower limit setting signal from the hue lower limit threshold signal (29). (ホ)彩度上限閾値信号(30)と彩度上限設定信号を加える加算器を設ける。 (E) Saturation limit threshold signal (30) and providing an adder adding the chroma upper limit setting signal. (ヘ)彩度下限閾値信号(31)から彩度下限設定信号を減ずる減算器を設ける。 Providing a subtracter for subtracting a saturation lower limit setting signal from (f) saturation lower limit threshold signal (31). 以上のごとく構成された請求項1の色抽出装置。 Above as constructed color extraction apparatus according to claim 1.
  4. 【請求項4】(イ)明度信号(21)を記憶する記憶器(37)、該記憶器(37)の出力と明度上限設定信号(39)を加える加算器(38)及び該記憶器(37) 4. (a) storage device for storing the brightness signal (21) (37), said storage device (37) and the output of the luminosity upper limit setting signal (39) is added adder (38) and said storage device ( 37)
    の出力から明度下限設定信号(40)を減ずる減算器(41)を設ける。 Output reducing the luminosity lower limit setting signal (40) from the subtracter provided (41). (ロ)色相信号(22)を記憶する記憶器、該記憶器の出力と色相上限設定信号を加える加算器及び該記憶器の出力から色相下限設定信号を減ずる減算器を設ける。 (B) storage unit for storing a hue signal (22), provided with a subtracter for subtracting the hue lower limit setting signal from the output of the adder and the storage device added to the output and the hue upper limit setting signal from the storage unit. (ハ)彩度信号(23)を記憶する記憶器、該記憶器の出力と彩度上限設定信号を加える加算器及び該記憶器の出力から彩度下限設定信号を減ずる減算器を設ける。 (C) storage device for storing a luminance signal (23), provided with a subtracter for subtracting the saturation limit setting signal from the output of the adder and the storage unit is added with the output saturation limit setting signal of the storage device. 以上のごとく構成された請求項1の色抽出装置。 Above as constructed color extraction apparatus according to claim 1.
JP7807995A 1995-02-27 1995-02-27 Color extraction device Pending JPH08237681A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7807995A JPH08237681A (en) 1995-02-27 1995-02-27 Color extraction device

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Application Number Priority Date Filing Date Title
JP7807995A JPH08237681A (en) 1995-02-27 1995-02-27 Color extraction device

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JPH08237681A true true JPH08237681A (en) 1996-09-13

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Family Applications (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7126612B2 (en) 2003-09-29 2006-10-24 Canon Kabushiki Kaisha Image processing apparatus, image processing method, program, and storage medium

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7126612B2 (en) 2003-09-29 2006-10-24 Canon Kabushiki Kaisha Image processing apparatus, image processing method, program, and storage medium

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